Malicious PDF — malware analysis report

Static analysis result for SHA-256 c12a36656e089959…

MALICIOUS

PDF

49.6 KB Created: 2020-11-30 13:13:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1ba01fc87dfffc458be86986d264043 SHA-1: 9a7ec031f0dca6495a8d0e9318cff867f3fa618c SHA-256: c12a36656e0899599e9127e48d483abf40be79df891097c3dd2d7097cb48c3c4
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical of phishing campaigns, which directs users to external URLs. The presence of numerous external links, including one to 'traffking.ru', suggests an attempt to redirect users to malicious sites. ClamAV detection and ML classification further support its malicious nature, likely serving as a phishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6064

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 49 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://traffking.ru/aws?utm_term=hakone+japan+guide
    • https://cdn-cms.f-static.net/uploads/4375340/normal_5f8d70fc01524.pdf
    • https://cdn-cms.f-static.net/uploads/4453134/normal_5fa8dcb9af3ef.pdf
    • https://cdn-cms.f-static.net/uploads/4451762/normal_5fa2b8eb1fdcb.pdf
    • https://padazuvotoj.weebly.com/uploads/1/3/4/6/134687326/dujadadufuzif.pdf
    • https://zokatitolef.weebly.com/uploads/1/3/4/7/134702636/1912502.pdf
    • https://buvijolijesikuv.weebly.com/uploads/1/3/4/6/134602818/70574b921a072.pdf
    • https://cdn-cms.f-static.net/uploads/4464302/normal_5fad1373b063d.pdf
    • https://s3.amazonaws.com/xumakomowi/diet_plan_to_lose_belly_fat.pdf
    • https://s3.amazonaws.com/zewimu/yoshon_bread_shipping.pdf
    • https://s3.amazonaws.com/magapeguwabe/worksheet_factoring_quadratic_equations.pdf
    • https://s3.amazonaws.com/biwubeleba/assessment_of_learning_ppt.pdf

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