Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9e2eee4d674122f…

MALICIOUS

PDF

46.2 KB Created: 2021-06-12 12:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 361c9c1b335c9d33fc4d7685a2622427 SHA-1: 9d1f43158fdc5e56e30247b5db153d43a02b59d4 SHA-256: c9e2eee4d674122fd1c7c88cb3898c0e3821164be5c5a39fe896a7843d472c18
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links pointing to compromised websites, likely intended to trick the user into clicking and visiting a malicious site. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for these links. The presence of 'utm_term=check+hours+played+ps4' in one URL suggests a lure related to gaming or PlayStation, aiming to deceive the user. No scripts were extracted, but the overall structure and linked URLs strongly suggest a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7492

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 https://allytemp.ru/uplcv?utm_term=check+hours+played+ps4 PDF link annotation
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0e0b83884---luvevuseseretinezug.pdfIn PDF document text
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/nfucktgg0s2u5og1fh5fil4nt8/dorux.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3c105024df---41091067753.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a12b9f9d86f---piwobuvebozewajobojosilin.pdfIn PDF document text
    • http://zoncmswebsitebeheer.nl/files/editor/file/29890927926.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a43ac3bc4b1---xegoz.pdfIn PDF document text
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/ad230a6218f5090d62dec0a41c9ecfce/27209219579.pdfIn PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/1339c820af7d954a0a3adc856f632c49/guxejewevezugivefamab.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607d67e18ef1f---junelobozufa.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c451618ec43---66236984463.pdfIn PDF document text
    • http://stinpo.com/ckfinder/userfiles/files/wukigege.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16096b2d4a22ac---30646846277.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/53a7714c4b4d6f5788091cf4995dd306/26571591391.pdfIn PDF document text
    • http://bbpcosmetics.com/admin/upFiles/2021-5/file/dedukameru.pdfIn PDF document text

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