Malicious PDF — malware analysis report

Static analysis result for SHA-256 08260ab8ca5f5fee…

MALICIOUS

PDF

159.6 KB Created: 2021-07-03 18:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: c4060341e9bcd7e31124c5699e6423c3 SHA-1: 35a6749d6275199d852939292d1764d433a2b10b SHA-256: 08260ab8ca5f5fee1c5b1b6f89aa3d25926bdf54dabd36dcd3031f7757c7251c
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. It functions as a link farm, containing numerous URLs pointing to various websites, many of which appear to be hosted on compromised CMS platforms. The presence of a URL with a 'utm_term' parameter suggests a potential phishing or spam campaign, likely aiming to lure users to malicious sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6888

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://garglob.ru/uplcv?utm_term=amy+winehouse+impersonator PDF link annotation
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffda0d4367---97791287825.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609112be2169e---72943184875.pdfIn PDF document text
    • https://al-wesam.com/userfiles/files/51618406014.pdfIn PDF document text
    • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f90128c897---taridazotemow.pdfIn PDF document text
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/8ff2d09de7eefdc323ea4a75ce5dd5d5/vuxikurefoviton.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/daf36e5be7fffa99bcb9b0c22c9c73f5/84881539202.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160985a8d9a2d5---94389791790.pdfIn PDF document text
    • http://modamoda.nl/uploads/pic_lib/file/tebafuzuxalujomit.pdfIn PDF document text
    • http://biosafety.biz/ckfinder/userfiles/files/68579553902.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609adb4ca9891---botimalibezawavodemudasa.pdfIn PDF document text
    • https://advantagelic.com/singhania/downloads/file/muzevatarojafujadezuwoto.pdfIn PDF document text
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/49c09f12d3eb6eb126387d3731149cf8/50405591392.pdfIn PDF document text
    • http://championshipsportsrings.com/clients/23492/File/62931408562.pdfIn PDF document text
    • http://murphysbeads.com/clients/54316/File/guwukipewutujebabomofivi.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160abcd0d18e69---75133867581.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/cd9f1d2e90f371eb16a4a3a85adfe426/8436370773.pdfIn PDF document text
    • http://arci-mp.fr/admin/File/zajizo.pdfIn PDF document text
    • https://businesslife.com/content/files/11061336488.pdfIn PDF document text
    • https://luminex.pl/upload/file/65396448215.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/443d59c839c10983d5a43c5d9ed6d73b/94619589598.pdfIn PDF document text

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