Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0c0ae340f27df8a…

MALICIOUS

PDF

63.6 KB Created: 2021-09-03 10:30:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6d7166596f4f2984b2ea9296e8735d3f SHA-1: 9d730110b62c54ac68086c170877be9e40eca18b SHA-256: c0c0ae340f27df8ab8cff20cdf2ddb486ac0d5af587bdf10c728078ede9d1ec3
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and exhibits characteristics of a link farm, with numerous embedded URLs pointing to compromised WordPress sites and disposable domains. The PDF structure and embedded links suggest an attempt to lure users to external malicious content, potentially for phishing or malware delivery. No scripts were extracted, but the PDF's nature strongly implies it's a delivery mechanism for further compromise.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4211

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://irlanc.ru/uplcv?utm_term=paramos+del+ecuador+pdf PDF link annotation
    • http://bannails.com/fckeditor_userfiles/file/kesozexuvedawigufovizuja.pdfIn PDF document text
    • http://railwaysrailroads.com/upload_files/files/lorifup.pdfIn PDF document text
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/851e3abdd342b0444d0da6fd8dfdb7f8/ledanemo.pdfIn PDF document text
    • http://ashioke.com/images/library/File/62150454880.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba9e73ef95---xavawidiviridupanak.pdfIn PDF document text
    • http://gtshotel.it/images/file/13763088545.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/0140c106b4639b196d88f8557b143314/sojumopivikubukewuba.pdfIn PDF document text
    • http://mail-ex.net/userfiles/file/4031089159.pdfIn PDF document text
    • https://apotekatia.ba/fajlovi/sazumedipebotipiliroxu.pdfIn PDF document text
    • http://kino-cosmik.ru/sadm_files/ruxufuko.pdfIn PDF document text
    • http://biemmecommerciale.eu/userfiles/files/jodavukavezerokuxedubib.pdfIn PDF document text
    • http://wannawwannie.pl/userfiles/file/53409739732.pdfIn PDF document text
    • http://dfwsedan.com/nbloom/fckuploads/file/71883694199.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0c3de5a565---xubivarik.pdfIn PDF document text
    • https://billard-hauri.ch/userfiles/file/45348841212.pdfIn PDF document text
    • http://mylodge-naoshima.com/24173006558.pdfIn PDF document text
    • https://takarasushimn.com/userfiles/files/13029245007.pdfIn PDF document text
    • http://phongthuydotho.vn/upload/files/79574063184.pdfIn PDF document text
    • http://pujcovnanaradi-tvarozna.cz/userfiles/files/vefurowo.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16114b63a11a54---29771487824.pdfIn PDF document text
    • http://bjbtrh.com/files/pic/file/jeserubixuwan.pdfIn PDF document text
    • https://swagath.co/new/ckfinder/userfiles/files/53902947619.pdfIn PDF document text
    • http://studiogalata.it/userfiles/files/82725403239.pdfIn PDF document text

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