Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5c608a3e132d2e6…

MALICIOUS

PDF

53.1 KB Created: 2021-05-16 17:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e655a016adeef56637918bdfa2b826d SHA-1: 4ed4d1ece1336b62ab5352c36a6f8b466dc60150 SHA-256: c5c608a3e132d2e627495344adfb0886b58e076bc1632a2d9fdaafc06e68c63c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains a link farm pointing to multiple compromised WordPress sites, likely serving as a distribution point for further malicious content. The presence of external URIs and the nature of the heuristics suggest an attempt to redirect users to malicious sites, potentially for credential harvesting or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6648

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/et383i86qv3ot3352pq92b1et0/lasadudebapezamufarogug.pdf
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/5a3c2287971d8fced9051e1ff77fd507/8957553263.pdf
    • http://krevue.cz/UserFiles/File/55486375936.pdf
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607af7d630e9b---rixufaxerixiwod.pdf
    • https://akproauto.com/nbloom/fckuploads/file/sadobug.pdf
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160953b8313cb1---mezijonolezeti.pdf
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/c2561052b9005272d9af99fd20aff484/68780995971.pdf
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e2bdedcd3b---woreligivoxuwiz.pdf
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/0eb2e42ecd5c31ffba59f0d35b189e45/juvabepuxaxap.pdf
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/03d9ce6cf8f47e8b6d352612385a73d5/muravikezuvasejeve.pdf
    • http://jjmcp.jp/userfiles/Image/file/90709715042.pdf
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/5e593c109495cb77fb2ddb328c542106/47007376352.pdf
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/dl8lgmq4daokd5ve1ks9f1etcq/nomuka.pdf
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/95313a3977e8010be212f735c2c7cabe/29730098007.pdf
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/005063b0a1baf6730811be130b01fd18/doditigoxovobupo.pdf
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/19eb65c9556e2ea68e5b11959bfed7fb/zosunaxoriwezefu.pdf
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082dcb1c64f7---1646534340.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=bescom+rural+bill

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