Malicious PDF — malware analysis report

Static analysis result for SHA-256 5264e0d5c85fee72…

MALICIOUS

PDF

84.9 KB Created: 2021-03-10 19:22:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: eec85e87cf91b2392fdfdeb84bb540f7 SHA-1: 10a877ae774fcb612634b833cb6ba2fd810b93e8 SHA-256: 5264e0d5c85fee725262259162c583073cc3b011a81c679c6234d872068869a5
164 Risk Score

Malware Insights

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

The PDF contains numerous external links, indicative of a link farm or phishing attempt, with one URL specifically mentioning 'package disabler apk full' as a lure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for malware distribution or phishing. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • 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://ponafet.ru/wix?keyword=bk+package+disabler+apk+full PDF link annotation
    • https://zokesafan.weebly.com/uploads/1/3/0/7/130775675/909783.pdfIn PDF document text
    • https://doxeraja.weebly.com/uploads/1/3/1/8/131871607/pilelepunege.pdfIn PDF document text
    • https://cdn.sqhk.co/sotisajen/5HSlggV/34084170494.pdfIn PDF document text
    • https://borubuzas.weebly.com/uploads/1/3/4/0/134042729/janofori-takodewoz-mebepumefozul-fufavudemorinu.pdfIn PDF document text
    • https://gegirugotosizuk.weebly.com/uploads/1/3/5/3/135397722/14a4be.pdfIn PDF document text
    • https://vunisanege.weebly.com/uploads/1/3/0/8/130813420/tugomolakexori.pdfIn PDF document text
    • https://kopezemab.weebly.com/uploads/1/3/4/3/134339977/349843.pdfIn PDF document text
    • https://jibajupo.weebly.com/uploads/1/3/1/6/131636806/xenopinogagi-nufabasenof.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/igigSii/18831384934.pdfIn PDF document text
    • https://warororob.weebly.com/uploads/1/3/5/3/135314520/xobaravonolof_xotixekusonep.pdfIn PDF document text
    • https://fopepusev.weebly.com/uploads/1/3/1/3/131383694/rexewudo-lidusomilamo-rasuwatiwek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/pesexidofivolorasafe.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/wow_classic_leveling_guide_addon_reddit.pdfIn PDF document text
    • https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_da824c5727204384aafcf2202a72c24c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/97893a66-53f7-4e89-b4fb-19adfd0705c2/inspirational_bruce_lee_quotes_water.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/48570923693.pdfIn PDF document text
    • https://d90bda3b-35dd-409f-9d4b-b4a00d881a52.filesusr.com/ugd/b88e3d_ebc14cbd34664a31ae13171fe4caafb1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/vidilun.pdfIn PDF document text
    • https://cb2d4818-2134-4ea5-ae57-1bc45cfc4292.filesusr.com/ugd/7e787c_df866f34522249618f34d7e0a147686c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b52462e-3549-4f60-a784-28b8189f97cf/coleman_furnace_repair_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1625b1e0-9692-4e6e-8e5b-6ff07e0d59d5/14084249111.pdfIn PDF document text
    • https://2d841ef3-a248-4e6a-996b-2d54d6713fdd.filesusr.com/ugd/1decf9_4657a190cf284094bf986aba8b3c355e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/76a3d0d4-f938-478b-b5a9-8f327b4647f0/how_trees_can_help_reduce_climate_change.pdfIn PDF document text
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_f5e3b3c0120746bca7f2398e28b623fb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bepukuba/menudowutepab.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B3 5576 bytes
SHA-256: 4cf7cdc2a2d62cf6ee5093eb5e8e6422db025a058c147843aa3fa3bb59577a29
font_01_sfnt_off00010ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB7 10948 bytes
SHA-256: b19a7a1fda1c4b33be04241094aa93cc94ddd0cf1492dfd3502616774c8c2ed7
font_02_sfnt_off0001302f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1302F 16144 bytes
SHA-256: 2a5f1667c2e343500efde63e3dd6a136498333968b1680966ac5eb34589f1174

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