Malicious PDF — malware analysis report

Static analysis result for SHA-256 294a5c84e10df4e6…

MALICIOUS

PDF

70.7 KB Created: 2020-12-07 16:11:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d30e919dee4eb745f22e2ada1b47efe8 SHA-1: c2112e8d5574c9607335254b22afd1b6c5d7130a SHA-256: 294a5c84e10df4e6e58a710812514eb78c28beae0a6fbd57f1e57cfefbf7f7ed
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one pointing to 'trafftec.ru', suggesting a phishing or SEO link farm tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and external links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://trafftec.ru/aws?utm_term=guide+to+arranging+music+pdf PDF link annotation
    • https://vutakajar.weebly.com/uploads/1/3/4/8/134896426/1776257.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502248/normal_5fcb2138609b1.pdfIn PDF document text
    • https://pirovosarelivo.weebly.com/uploads/1/3/1/4/131406751/wamavupozalamosoteli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc5c50e1c8c741314534cd3/t/5fcd6641920f47545ba6d819/1607296577943/94350605847.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10c85bdb33045eec3233b/t/5fc7f717d89c4f4741ec791c/1606940441453/how_to_download_groupme_app_on_iphone.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5340ff9866f3fd2f0118d/t/5fc8ae376652ad59ec2eb3a3/1606987319965/kefefolidirujiveni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e8f75bd-9bbb-4923-a91b-1e3ee5871615/wumesuwaguwurubexemeb.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5331d17e72026400627cf/t/5fc8e1e8d17d55300fb8e8ad/1607000552644/mitavowafumoma.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/how_to_cite_beowulf_mla_8.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c67840f1034a5ca82603/t/5fc29881e6d49a06bbe750a7/1606588546042/the_gingerbread_man_short_story.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe08c6f81c9a2a0c6944ab/1606289607003/25263772433.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/54316517558.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5303b8ef7301f8b2cf6bd/t/5fcd274874a40730fba19735/1607280457106/big_button_flip_mobile_phone_for_elderly.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc141b28ef7301f8b131a8a/t/5fc3bfbf2dd96f5918604d96/1606664128047/11667548150.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE7 5356 bytes
SHA-256: c2fd7a562cbd65472c5948b2131c466b0138789a1fa59c4330b550318f809ed6
font_01_sfnt_off0000de08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE08 9984 bytes
SHA-256: 3dedf6379df86e2c2ddf95ab3dc5bdfa386140f0602db3d750a3694291412eac
font_02_sfnt_off0000fffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFFE 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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