Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c7329a55325e30f…

MALICIOUS

PDF

78.8 KB Created: 2021-03-23 16:07:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 46d3d1a72c62c562a6e844f48f98c15d SHA-1: e4d3e01bbecfc0e34247b343437d60725a7a01cf SHA-256: 0c7329a55325e30f5bf943e67e849c50c3b584b93e43b9a4e2a863611c92c301
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://dafemum.ru/award?keyword=unconscious+bias+training+materials+pdf'. This indicates the document is designed to lure users to a phishing site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://dafemum.ru/award?keyword=unconscious+bias+training+materials+pdf In PDF document text
    • https://vemenujobife.weebly.com/uploads/1/3/5/3/135399872/3f2f95494be3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426696/normal_602d2a8ee1546.pdfIn PDF document text
    • https://gomepenet.weebly.com/uploads/1/3/0/8/130874128/dd19f074637f3.pdfIn PDF document text
    • https://xidekudogigut.weebly.com/uploads/1/3/4/6/134683706/xinotipa.pdfIn PDF document text
    • https://cdn.sqhk.co/kavatupopum/gqG2gga/52955939616.pdfIn PDF document text
    • http://bidimiw.sportsontheweb.net/remotonuxezogujotole.pdfIn PDF document text
    • http://mukinokelek.mygamesonline.org/amnesty_international_death_penalty.pdfIn PDF document text
    • https://cdn.sqhk.co/matelasoguje/higikWh/yamaha_jet_boat_for_sale_houston_tx.pdfIn PDF document text
    • http://sizerasadaxer.mywebcommunity.org/tegibigawolowegujem.pdfIn PDF document text
    • https://xelixexojiga.weebly.com/uploads/1/3/4/1/134108676/ad712f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488116/normal_5fd7ee045eb82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375515/normal_6042d7b642f4c.pdfIn PDF document text
    • http://bozesedixek.mywebcommunity.org/58742921248.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/egdgi7F/67226646339.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450355/normal_5ff2d26b1c595.pdfIn PDF document text
    • https://minaraxu.weebly.com/uploads/1/3/4/7/134765114/2218955.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/nonipesikiri/14091930732.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/pufuromi.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/hoover_windtunnel_2_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/fowevugopixulotofop.pdfIn PDF document text
    • http://sinusudixuxuwad.atwebpages.com/86891531778.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/traductor_espaol_ingles_audio_para_escuchar_pronunciacion.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/tewoxarimazovaxokatud.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f57d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF57D 5604 bytes
SHA-256: a0ed54c063d1281c60bcc7dd051cae0923613d6c77b70ae20c7d83c36f08da17
font_01_sfnt_off00010877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10877 10840 bytes
SHA-256: 96654bef392ce49b8224a77f6bb7db3e4ecb3ab7fca14ab166c99ea93442d682

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