Malicious PDF — malware analysis report

Static analysis result for SHA-256 4915f52151f5c7f5…

MALICIOUS

PDF

62.5 KB Created: 2020-12-19 09:52:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 67cbea89e5f3b8d97019ec9a945eb441 SHA-1: b8ed0110b9d1da743ff49e806fc925c45e6982d8 SHA-256: 4915f52151f5c7f50e1039c881aa38e370337216338eba7b742f1c61d8b4097d
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://traffmen.ru/strik?utm_term=guide+to+producing+a+fashion+show+4th+edition+pdf'. This, combined with a high ML classifier score and ClamAV detection, strongly indicates malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a fashion show guide, likely to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffmen.ru/strik?utm_term=guide+to+producing+a+fashion+show+4th+edition+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f8d35c242f88.pdfIn PDF document text
    • https://sebidodeg.weebly.com/uploads/1/3/4/4/134438526/36bec406a3b414.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370051/normal_5f970be4924c9.pdfIn PDF document text
    • https://fosobezi.weebly.com/uploads/1/3/4/8/134898374/kabirafo-porofa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5faa616098469.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/6792893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501659/normal_5fc37b5ee102e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471479/normal_5fa7fc1e72282.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5156917e7202640050e05/t/5fc67fb94f98375720c031ee/1606844345625/24004951005.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc392da27a199023ac63631/t/5fccf6fac00f007ceae9bb51/1607268090943/nikah_contract_in_islam.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffb205e8e827d4288adb3/t/5fc0d84d145a8629dcd0bce4/1606473808746/behringer_xenyx_302usb_review.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc112a36609fd0ee7924cd4/t/5fc545675147b14804df392f/1606763886737/21775435054.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/mahatma_gandhi_autobiography.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce4fa390e5b06becb65dca/t/5fd73b5972b1137fa990ff62/1607940953539/c._o_full_form_in_block.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe42ac7acac6192a8cdb0e/1606304429802/histone_proteins_in_bacteria.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_off0000b8b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8B4 5596 bytes
SHA-256: cfc5c0d447744e1084f364195b24635278f963b2274a56860bb2c9e8c6be2c11
font_01_sfnt_off0000cbd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD8 9856 bytes
SHA-256: 94b352cafc17be3e1cecc6c91e868f33fa6de1c1c72cdcc33b5f7097f2e92f83

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