Malicious PDF — malware analysis report

Static analysis result for SHA-256 84082cabad646f74…

MALICIOUS

PDF

50.6 KB Created: 2020-11-25 18:49:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad1e16caaff7e0ad5d7bf369fa9c5bc9 SHA-1: 9c6312e19a0e0bd03287c947278bd0bc857ba3d7 SHA-256: 84082cabad646f748a14f09c4e8d2d5de644ac97d03362243dee0a3f02e3c8c4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of the primary URLs extracted is 'https://traffking.ru/aws?utm_term=british+boer+war+uniforms'. The presence of numerous external links and the ML classifier flagging this PDF as malicious suggest an attempt to redirect users to potentially harmful content or engage in SEO spam. While no scripts were explicitly extracted, the PDF structure and link farm indicate a malicious intent, possibly related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7801

Heuristics 4

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=british+boer+war+uniforms
    • https://cdn-cms.f-static.net/uploads/4391921/normal_5f9c0a247c2c7.pdf
    • https://vefarekosisag.weebly.com/uploads/1/3/4/7/134722728/taruwamerunapor.pdf
    • https://wugovokida.weebly.com/uploads/1/3/4/3/134319073/ginuzadibaje-zedeve-kedobem-dejun.pdf
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/f39db2ffe.pdf
    • https://ruwadegefanum.weebly.com/uploads/1/3/4/1/134108857/bugevasaluke_pugadavimunupa.pdf
    • https://cdn-cms.f-static.net/uploads/4369307/normal_5f89f109cd5af.pdf
    • https://s3.amazonaws.com/kulinisokakewi/watch_my_hero_academia_dubbed_season_4_ep_2.pdf
    • https://uploads.strikinglycdn.com/files/f528a3b6-4c70-44be-b0ce-8234182ae46c/76838022860.pdf
    • https://s3.amazonaws.com/wexukufedepim/82013148764.pdf
    • https://uploads.strikinglycdn.com/files/b03f7c9d-243f-42f0-b42a-7a545c441a7a/61547231315.pdf
    • https://uploads.strikinglycdn.com/files/1be20cfa-d26d-4c97-b2fc-ecbd622009c1/carolina_chaos_aau_basketball.pdf
    • https://uploads.strikinglycdn.com/files/308a83df-e0da-4f5c-9eba-b464c6df0bdd/economics_eoct_mother_of_all_study_guides.pdf

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