Malicious PDF — malware analysis report

Static analysis result for SHA-256 976154c8bb9aa852…

MALICIOUS

PDF

54.8 KB Created: 2021-03-01 04:11:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 3c54a6c165158b7a9e2811a93d5c6351 SHA-1: d2570a5a5b647db31877c874fc189d550c74ccd1 SHA-256: 976154c8bb9aa8528ed06c6e569c1acee9a2a479e693b9dd35d84718e475c375
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a URL associated with phishing, specifically mentioning 'adobe acrobat xi pro serial number free'. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to contain text related to the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7052

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.
  • 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.
  • 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://crophysi.ru/strik?utm_term=adobe+acrobat+xi+pro+serial+number+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370302/normal_6020c09416d9f.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/YHfVdxH/download_zuma_deluxe_for_pc_crack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371806/normal_603c1f1a2d614.pdfIn PDF document text
    • http://persequenteamsohbet.com/what_is_not_a_goal_of_information_security_awareness_programson488.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393358/normal_5fc8b6fa6368a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500679/normal_5ff54fc377cb7.pdfIn PDF document text
    • http://byseles.xyz/audio_technica_turntable_at-_lp120_manualdfmmc.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/g9Vtcq0/anthill_farms_harmony_lane_pinot_noir_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/6iggeDA/11704530894.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393026/normal_602b3bc644f67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387709/normal_601b84c3453e3.pdfIn PDF document text
    • http://xesubixuj.iblogger.org/fugajuruvimovaxif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425009/normal_60004d8c7cae5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492253/normal_5ffd1ff00fa00.pdfIn PDF document text
    • http://usejus.pro/xodusi2gk7n.pdfIn PDF document text
    • http://unreguezff.rest/758058628522vwa8.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/quick_grammar_guide.pdfIn PDF document text
    • http://xusijaxux.rf.gd/blank_calendar_template_november_2019.pdfIn PDF document text

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