Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d93196ff79297e7…

MALICIOUS

PDF

77.5 KB Created: 2021-03-18 04:55:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 486edaeac325033bb47d4c5f8fe0f8f4 SHA-1: 4b6bc2369b9648ee9c708ff13335734c3a54ee85 SHA-256: 6d93196ff79297e7037806a42de39dd7413434443cf04061a6610c404de886ec
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The embedded URLs and the PDF's structure suggest it functions as a link farm, directing users to potentially malicious or phishing sites. The presence of external URIs and a link farm heuristic indicates an attempt to redirect users to compromised or malicious domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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.
  • 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://kuzutuzo.ru/strik?utm_term=analyze+handwriting+personality+traits PDF link annotation
    • http://odebayitrafikhizmeti.com/detatituseboxunebajo815e6.pdfIn PDF document text
    • http://idealslimitaly.site/wumuvexazufakapodengefe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421937/normal_6041e659f0897.pdfIn PDF document text
    • http://zozegakipuvi.iblogger.org/hack_router_login_page_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365613/normal_60516a7199e5a.pdfIn PDF document text
    • http://mukinumatonewo.getenjoyment.net/50965318663.pdfIn PDF document text
    • http://sputnews.com/928142002019mle5.pdfIn PDF document text
    • http://islandlandscapesbb.com/social_construction_of_reality_berger_and_luckmann_summarym6y64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487647/normal_603eeb6f330e1.pdfIn PDF document text
    • http://nijaxubazaziw.mypressonline.com/fejutubipemegusoxove.pdfIn PDF document text
    • http://ravovenovibu.medianewsonline.com/what_foods_to_avoid_to_prevent_eczema.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://05f6fcc2-a4c7-4d5b-b58c-97b640a93f4d.filesusr.com/ugd/74147a_32cc01f0322242f0806c38e4c83c0bdd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecabebe0-4fd2-4f9f-8830-2d59fd807290/porque_se_tiene_que_sacar_la_muela_del_juicio.pdfIn PDF document text
    • http://bolilolu.epizy.com/ashampoo_burning_studio_2013_full_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0666efee-1701-4595-9137-d59c6064e723/tuxax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a504a65a-000a-4ef4-b356-83cb6a7d05c0/vowujomoledimiga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45312ae6-b21a-41d6-b00f-3850d452809a/worimaxeturebuded.pdfIn PDF document text
    • http://zugotival.epizy.com/kupodasisukok.pdfIn PDF document text
    • https://3e1af3dc-cf37-4f58-935d-0a6065bc5ce9.filesusr.com/ugd/3ca236_64ee056713de4c1b800394d6ddfb7651.pdf?index=trueIn PDF document text
    • https://28546a20-d0cc-4b82-bb4f-6711990cd5a3.filesusr.com/ugd/0bcf16_2665b755a8604cff8fdee80fc4daa8c6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/11e15152-8183-4d2e-959c-863c023b86fc/8947217773.pdfIn PDF document text
    • https://e216d865-ddc7-438b-99b2-64609380b1bb.filesusr.com/ugd/7ae8b3_878a77e5b5b444fe939b236a73ed84e4.pdf?index=trueIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF12 5452 bytes
SHA-256: b068e0805458731bfb5d593b5086da25d859765f1e5d3fd02f2d881297f20f5a
font_01_sfnt_off000101be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BE 10784 bytes
SHA-256: a5705cf9c654c259aff6a242fc9db78d9fad68d455ded1c3452c3805bd461702

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