Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a5a1006c275cc14…

MALICIOUS

PDF

41.6 KB Created: 2020-12-07 09:23:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3abd32c48037c0dc58f28269e93b5cde SHA-1: 479fa8dc7a21fa8c291dd6a43beaa54cc5558372 SHA-256: 9a5a1006c275cc14d547499d48a28d41680179521ca206883b99524ba7ea6c0d
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link. The primary URL, 'https://trafffe.ru/aws?utm_term=tackling+obesity+ielts+reading+answers', is likely part of a phishing campaign. The PDF also contains a large number of external links, suggesting it's part of a link farm designed to improve SEO for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8113

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://trafffe.ru/aws?utm_term=tackling+obesity+ielts+reading+answers
    • https://vuxilimibipemop.weebly.com/uploads/1/3/1/4/131453056/7954890.pdf
    • https://fudegedetet.weebly.com/uploads/1/3/4/7/134733785/3439030.pdf
    • https://mesovozilepako.weebly.com/uploads/1/3/4/5/134588792/savubavosunoxe_zagowujobel.pdf
    • https://terusabul.weebly.com/uploads/1/3/4/7/134702655/mapuputevisasukilaza.pdf
    • https://uploads.strikinglycdn.com/files/09ae8774-5784-4929-a480-466b4f0ad68d/zigubigadenaro.pdf
    • https://uploads.strikinglycdn.com/files/d06fa42a-ac3a-4432-95ef-a97f38495daf/como_funciona_un_triac.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf50762dd96f5918e54b5d/1606373510996/joy_luck_club_sparknotes_chapter_1.pdf
    • https://s3.amazonaws.com/xabalaru/food_business_proposal_sample.pdf
    • https://s3.amazonaws.com/mejifavo/89384229355.pdf
    • https://static1.squarespace.com/static/5fc0e0febe9b6939510aa6a3/t/5fc167355147b14804682b27/1606510390059/gofodexov.pdf
    • https://static1.squarespace.com/static/5fc191a61452f90b7fea0e1e/t/5fc334223570fb44d16b9111/1606628387696/fedokare.pdf
    • https://static1.squarespace.com/static/5fc0f186bda9c57a97be6d6b/t/5fc21f3608845d0924d28333/1606557496219/36691137883.pdf
    • https://uploads.strikinglycdn.com/files/59611a8b-5e0f-4100-be03-cc3b5cc7a92c/11790158067.pdf
    • https://static1.squarespace.com/static/5fc31c7792c50b1a1e85f0fa/t/5fc8b6b6970db930d9c74c41/1606989495140/javaxeganexemode.pdf
    • https://uploads.strikinglycdn.com/files/333146bd-3e25-4e74-b7b9-8eb84d07c62a/71503413279.pdf
    • https://uploads.strikinglycdn.com/files/7e095f0d-f932-4fc9-923b-243e2409635c/bankruptcy_attorney_nyc.pdf

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