Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec7c0bbebfbf27e6…

MALICIOUS

PDF

50.3 KB Created: 2021-04-01 07:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cd0d15908ea86aa25cb04e5597b7dc5 SHA-1: a9a261e8bc2a480bd4eafa9aa543e86222104de4 SHA-256: ec7c0bbebfbf27e6feae7af499675e7920e20583d6675ed54fe2f7caf32ddba7
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a phishing lure, being image-heavy with a clickable action trigger. It contains numerous embedded URLs, many pointing to disposable hosting services, suggesting an attempt to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a delivery mechanism for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6929

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 50 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://baarspo.ru/award?keyword=st+anselm+proslogion+pdf
    • https://cdn-cms.f-static.net/uploads/4376850/normal_6019d04e2fdf4.pdf
    • https://tusezewepoxir.weebly.com/uploads/1/3/4/3/134339989/temozez_jegabowejobuw_tinomanosew.pdf
    • https://wafilanukeg.weebly.com/uploads/1/3/5/3/135309269/37ee9267c8e598.pdf
    • https://pizavanaxuvilu.weebly.com/uploads/1/3/5/3/135386491/eb657bc8f7.pdf
    • https://cdn.sqhk.co/wolitobutak/USKpSIR/50286642692.pdf
    • https://cdn.sqhk.co/xixujipum/Ggjrshe/bumevuzetovotemunolaxefe.pdf
    • http://novazeku.mygamesonline.org/budig.pdf
    • https://cdn.sqhk.co/nipigagavadu/cViajh1/drum_solo_rock_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4406191/normal_5fecba6d0e773.pdf
    • http://pekamidakoj.atwebpages.com/tonagagukukafekaxula.pdf
    • http://naxesabefadufu.atwebpages.com/clasificar_numeros_racionales_e_irracionales_ejercicios.pdf
    • https://569961a5-e6b5-462d-8b38-7193d5e7b20b.filesusr.com/ugd/a37a2e_e79eb105696343e18c20c26d2ed1af99.pdf?index=true
    • https://9370005b-87d8-49d8-b27c-18dce193a2f1.filesusr.com/ugd/52ea04_de2c04723f4942449b8e8cba00470e0e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/79d72022-c23e-43e4-a8c9-3c8fd4a67f34/bidoritevixatimar.pdf
    • https://uploads.strikinglycdn.com/files/5b3f4e82-466c-4e56-a376-4f6ac993e576/20174196635.pdf
    • https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_6c87328ecb614744b95630389f94e6f3.pdf?index=true

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