Malicious PDF — malware analysis report

Static analysis result for SHA-256 af947a11000c7119…

MALICIOUS

PDF

74.6 KB Created: 2021-03-17 03:26:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: a2b4ede1486056c171b2c1ff0e29ba2c SHA-1: c3b07ffdca86f3a80c73bcfaede91222e0b153af SHA-256: af947a11000c7119ed4e6f009a87e7f7887c4bd3ae560b3c4da021401fca4c3a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs to a suspicious domain, suggesting a phishing or credential harvesting attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://jacksth.ru/award?keyword=craig+smith+wonky+donkey+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465402/normal_6028236ae1b69.pdfIn PDF document text
    • https://cdn.sqhk.co/xapixigu/gewjhif/wixivurowesasosixinap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454543/normal_5fd10e14e3bc8.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/gfjbcPA/runowoxipufovenufebasu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490722/normal_6011e5018fb34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500438/normal_604cb6721aac4.pdfIn PDF document text
    • http://hotsales-com.xyz/581355186427eaea.pdfIn PDF document text
    • https://cdn.sqhk.co/dutudovajud/NWckZja/mejur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417321/normal_5fc6bff889d3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457005/normal_5fdd30030ea03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482413/normal_601e4f4599578.pdfIn PDF document text
    • https://cdn.sqhk.co/gutemokerezo/giloegi/3d_ball_maze_game_online.pdfIn PDF document text
    • http://damvglaz6.xyz/61913152418qdwr1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368478/normal_5ff29f09cd2ce.pdfIn PDF document text
    • http://leopolds.space/rem_its_the_end_of_the_world_lyrics_chords2w0pi.pdfIn PDF document text
    • https://cdn.sqhk.co/mojazejo/8bK0dih/wisexajir.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/viromibukoleliw/australian_super_fund_nomination_form.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/what_would_cause_the_transmission_not_to_engage.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/57114937132.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_off0000e3b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B0 5584 bytes
SHA-256: 82adbbce648b627eeb83dc62e1c3347d43847435f0487a3a869788841c95d50d
font_01_sfnt_off0000f69d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF69D 11408 bytes
SHA-256: fa035bc2edaf8921d939aaabcf77c40c7ed43f47fc7a9aae31d1d36025924ad8

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