Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd754282b2b84a0c…

MALICIOUS

PDF

141.8 KB Created: 2021-06-05 07:36:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 0c7133d7c03fedd9defdf6f090fb413f SHA-1: 1b35a3bdbb5fa05c8e1dabbb7209764d3f3cdbf6 SHA-256: fd754282b2b84a0cf3b19ef768230d9c11a5ab8cbd9e99ed08cb1c884a3233d3
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection scheme. The presence of a 'password-protected archive' lure indicates an attempt to bypass security controls by encrypting a payload. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a downloader or redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9556

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://infrive.ru/pbw?utm_term=what+is+ct+cardiac+calcium+scoring PDF link annotation
    • https://mezepimera.weebly.com/uploads/1/3/4/8/134860759/tikasizoveti.pdfIn PDF document text
    • https://gomigara.weebly.com/uploads/1/3/4/7/134727279/juzexok-vutebolimumi-ruxijuxugamew.pdfIn PDF document text
    • https://baresifesej.weebly.com/uploads/1/3/4/1/134131831/116cbb485c7ef12.pdfIn PDF document text
    • https://tagorawijetix.weebly.com/uploads/1/3/5/3/135392874/9199978.pdfIn PDF document text
    • https://gumopaxegekugod.weebly.com/uploads/1/3/4/0/134018731/zakubisuz.pdfIn PDF document text
    • https://zodijezuworid.weebly.com/uploads/1/3/1/4/131483265/a691454cf4.pdfIn PDF document text
    • https://towetebofipu.weebly.com/uploads/1/3/1/4/131437669/kikoxosizisi-niwavonuzal-rireb-wibixujixiredid.pdfIn PDF document text
    • https://zirotowaze.weebly.com/uploads/1/3/1/0/131070424/fupikesesulileb_fosuki.pdfIn PDF document text
    • https://nizotuzuwiza.weebly.com/uploads/1/3/7/5/137507555/9617348.pdfIn PDF document text
    • https://wenudujajavu.weebly.com/uploads/1/3/5/3/135318124/8292919.pdfIn PDF document text
    • https://lesuwigiwojan.weebly.com/uploads/1/3/4/3/134309114/aeeedd933ae3a.pdfIn PDF document text
    • https://lononefebodamu.weebly.com/uploads/1/3/2/6/132696526/bd7f651.pdfIn PDF document text
    • https://jilanuma.weebly.com/uploads/1/3/4/5/134522828/sopumevizezuza_paviwa_wanilolekebij_fosesuvez.pdfIn PDF document text
    • https://juxepikipoz.weebly.com/uploads/1/3/4/4/134486641/6881719.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ebf68add-ac34-4ee1-8d41-7623a82d1b99/99770216589.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4078745d-450e-4176-b81b-535f39a737bc/is_love_chunibyo__other_delusions_over.pdfIn PDF document text
    • http://zufiwuz.pbworks.com/w/file/fetch/144447342/jvc_kd-r330_bluetooth_pairing_iphone.pdfIn PDF document text
    • http://jeveriwilum.pbworks.com/w/file/fetch/144600750/muqabla_mp3_song_download_pagalworld_ringtone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38c722bf-c8c4-4a40-a075-0311427ec84c/59327894242.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63a56b8f-174d-4d72-a07e-f49122f0e9f8/6521212321.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/128bc83a-3316-4450-b9e5-8e73859b4adc/22492932895.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2a0b024-99b0-49fb-807e-6ea5e14cbb89/how_to_replace_briggs_and_stratton_ignition_coil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/746915af-e59e-4070-988a-4be7b9a75ffd/57592907985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/093c2262-dddb-4b76-9a0b-c83b7b9af8fb/visual_foxpro_commands.pdfIn PDF document text
    • http://barumena.pbworks.com/w/file/fetch/144439443/ppsspp_gold_pc_new_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54bc0b16-5d16-47e2-a38d-ac3e92a83ccb/39874950104.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40ee8c1b-5818-4b9b-8e0a-98905a8aabd5/50356157062.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19C70 3876 bytes
SHA-256: 6cfc847c29c756e3461b9fbe8b49dce5c6ec3eb0f09d0960b8a9bd5814fa72be
font_01_sfnt_off0001aa43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA43 5128 bytes
SHA-256: 09edcfeb085b1c907ab5853c5c6eb8e047a466ec61df08fa0c6f0c754dc9553f
font_02_sfnt_off0001bb7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BB7D 10856 bytes
SHA-256: 697e45ced7fefef67c524daf7587d8ad6310d7748badcdf43e2644ab78962052
font_03_sfnt_off0001d9d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D9D9 12528 bytes
SHA-256: 3dda6f64cda611c6e2e60838e5a9bd8fe41328a2c6cbdbf1bfc04c5a5a2be1e9
font_04_sfnt_off000204b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x204B5 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848
font_05_sfnt_off0002197d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2197D 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

Open this report in the interactive analyzer, or submit your own file for analysis.