Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e8ac31672ed8a8…

MALICIOUS

PDF

51.7 KB Created: 2021-03-28 22:45:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d70f1c6fc967fa55bf8f6fa1c93cad44 SHA-1: f115e1c255c834dde98d2f9f4caa63715df36b75 SHA-256: 32e8ac31672ed8a881b3e99dd59fae6decea9f3236cd630174d9e575be28bb97
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to S3 buckets and other domains, indicative of a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and URI heuristics point towards an attempt to redirect the user to malicious content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7129

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/award?keyword=hasyiyah+al+bajuri+pdf
    • https://nukivobiwej.weebly.com/uploads/1/3/4/0/134016752/fufevafofafej.pdf
    • http://usesalle.xyz/gomesapafisilaralu21h1d.pdf
    • https://tawedituja.weebly.com/uploads/1/3/4/8/134864040/gitukusu.pdf
    • http://8gusevshop.website/it_s_aumsum_timefpz5l.pdf
    • https://lunipudazu.weebly.com/uploads/1/3/4/4/134462877/bilogetolivuzolusasa.pdf
    • https://s3.amazonaws.com/welanisowari/jawuresedu.pdf
    • https://s3.amazonaws.com/kulinisokakewi/are_oil_filled_heaters_cost_effective.pdf
    • https://s3.amazonaws.com/bitajemisajoz/seloxelinawep.pdf
    • https://s3.amazonaws.com/bezorito/molezizijuduk.pdf
    • https://s3.amazonaws.com/gopifu/80717906445.pdf
    • http://gezupipul.rf.gd/parajasimobakikepawoda.pdf
    • https://s3.amazonaws.com/geraromu/15204591861.pdf
    • https://s3.amazonaws.com/fosawef/bixawodupuso.pdf
    • https://s3.amazonaws.com/wipotegadodorek/first_apostolic_church_songs.pdf
    • http://vulomalizekuvu.rf.gd/sulatamitupakebojeva.pdf
    • https://s3.amazonaws.com/babuxufarizuxur/88798110069.pdf
    • https://s3.amazonaws.com/xezujuxoz/nipazojefigidezob.pdf

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