Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fbd4f6086a47564…

MALICIOUS

PDF

61.4 KB Created: 2021-06-05 23:03:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c4b2431c11193c0ead6fede50f377d9 SHA-1: 49ee5f7b50147c33ca88077d13346d619f2f8773 SHA-256: 2fbd4f6086a47564b28ca876873a982ca3f1fe17ee9ec741bc31f3680ead9c07
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ClamAV and ML classifiers, and exhibits characteristics of a link farm pointing to compromised WordPress sites. The document body, though heavily obfuscated, suggests a lure for editable Word templates, likely a pretext for phishing or malware distribution. The embedded URLs are indicative of a phishing campaign aiming to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7196

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://philabc.ru/uplcv?utm_term=caratulas+editables+para+word+gratis
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/c2d5d16824db23217d40f7ab904e10a2/wamoxe.pdf
    • http://adaviestransportltd.com/userfiles/file/korafewotokawezix.pdf
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//84934826023.pdf
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078f14666b26---74336385480.pdf
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aef9d3010e4---nezoje.pdf
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16086a60432474---65317021616.pdf
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/4kqh41457em82d9qa8vc12ec7u/wilopezipovis.pdf
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160acac3134816---tedoma.pdf
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079c976a2577---44755944257.pdf
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/8sfubcr43lo62bd37djb87v1gm/58335295914.pdf
    • http://jatyn.cn/upfiles/202105/file/1622016466.pdf
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160adf13ec5b64---desanojivefogedu.pdf
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b3df2fa1924---jiridaluzu.pdf
    • http://zzliuxue.com/upfile/file/%5C/donixutanafivakoxuvupikob.pdf
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084c66d22018---risimupogegolulise.pdf
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/ddf5f52a4d7641130a2f8a69a62b774d/62436511393.pdf
    • http://aeronautike.com/userfiles/file/91400125029.pdf