Malicious PDF — malware analysis report

Static analysis result for SHA-256 18cd33fe27276493…

MALICIOUS

PDF

62.5 KB Created: 2020-12-30 23:18:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 644a90cb24f5488e2206f955a1a03e7c SHA-1: fea9c589214b22822011e4f76bea9325e3f7564f SHA-256: 18cd33fe272764930779012e6e1fe9b6d83690e613b9f96d50f75f8e38b3c2aa
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains heuristics indicating it is a phishing attempt and a link farm. It embeds a URL that masquerades as a user manual for a Chamberlain Liftmaster garage door opener, likely to trick users into visiting a malicious site. The presence of external links and the ML classification strongly suggest malicious intent, likely to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7689

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffset.ru/123?utm_term=chamberlain+liftmaster+garage+door+opener+owner%2527s+manual
    • https://cdn.sqhk.co/navififoro/DVOZajj/undeniable_meaning_in_punjabi.pdf
    • https://xoraxabaxid.weebly.com/uploads/1/3/2/6/132682630/472ca9225f78.pdf
    • https://cdn-cms.f-static.net/uploads/4369191/normal_5fe9fb0813ef1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e238fa5e-2558-4590-8161-5d14dfe281fd/fixubebidomoxutix.pdf
    • https://uploads.strikinglycdn.com/files/1717be1e-72d5-4e14-830d-4ab365a0329d/nuduseralazefawiwepudimox.pdf
    • https://uploads.strikinglycdn.com/files/91d2bfb8-605e-4ec0-8442-cef1d25e5793/50249526848.pdf
    • https://uploads.strikinglycdn.com/files/48c61cdd-4d6e-44de-bba4-d4eb2a080a5a/maytag_bravos_xl_electric_dryer_repair_manual.pdf
    • https://uploads.strikinglycdn.com/files/62830f94-6868-40bf-9323-53742d9a6670/vewefivajikawobidavo.pdf
    • https://uploads.strikinglycdn.com/files/39a9e6a4-20c2-401a-ba11-a6cfe14585e1/neca_lab_escape_predator_review.pdf
    • https://uploads.strikinglycdn.com/files/bc51415a-06f8-4b0f-89ba-cab14d5137e8/71080966214.pdf
    • https://uploads.strikinglycdn.com/files/97fe519f-8806-4265-9aea-65007ebce175/54751101232.pdf
    • https://uploads.strikinglycdn.com/files/cc62dcb0-339d-4201-b7ff-a61583c7d67c/chemistry_a_molecular_approach_4th_edition_citation.pdf
    • https://uploads.strikinglycdn.com/files/5112a537-f26d-47ad-972a-8838b422c80d/april_marie_tinsley_case.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d787.bin
fee24de4009b25eefb129b5bdee7ac592bd58c29143b3d048471822c4c72b7eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD787 5628 bytes

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