Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5948ac9137ade32…

MALICIOUS

PDF

58.1 KB Created: 2021-09-20 07:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: d01a5a469b497d18e354bf60c380d910 SHA-1: 508e5c2d02f5fc55202c020b354558689041b9a6 SHA-256: f5948ac9137ade32eaf7604989bb6c4da38bbb275a9adc7c718aaada1bf095d1
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are structured as a link farm. This suggests a phishing or malware distribution campaign. The ClamAV detection and ML classifier further support the malicious nature of the file, indicating it is likely a phishing or trojanized document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5305

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://chcial.ru/uplcv?utm_term=dragonwings+laurence+yep+pdf PDF link annotation
    • http://huemin.com/fckeditor/userfiles/file/80344082520.pdfIn PDF document text
    • http://csc0516.com/userfiles/file/20210918232141_fz315g.pdfIn PDF document text
    • http://dorapeyzaj.com/userfiles/file/wepepipakixisa.pdfIn PDF document text
    • http://hnspkjx.com/d/files/95456141909.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/161409bc55895d---12758869702.pdfIn PDF document text
    • http://nhakhoasaigonkimcuong.com/uploads/images/files/93929407846.pdfIn PDF document text
    • http://shepardinteriordesign.com/rw/upload/file/wakubamunefupazezegizur.pdfIn PDF document text
    • http://shopcode.ru/uploads/file/71810412924.pdfIn PDF document text
    • https://mlspoland.co/files/file/tugunifidaxuvuk.pdfIn PDF document text
    • http://acsalma.hu/userfiles/files/15567478314.pdfIn PDF document text
    • http://sweethomedelivery.com/ckeditor/ckfinder/core/connector/php/uploads/files/99263258554.pdfIn PDF document text
    • https://ohcsi.com/ckfinder/userfiles/files/23497976907.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/16138df1c39241---58676566171.pdfIn PDF document text
    • https://corpeverest.com/ckfinder/userfiles/files/68334534240.pdfIn PDF document text
    • http://www.colormotion.cz/UserFiles/file/40523155182.pdfIn PDF document text
    • http://pscworld.eu/ckfinder/userfiles/files/jikajex.pdfIn PDF document text
    • https://genegurumiraclehealer.com/userfiles/file/95667021803.pdfIn PDF document text
    • http://ayurveda-shiatsu-qigong-nice.com/upload/files/paxex.pdfIn PDF document text
    • https://zooiguana.pl/app/webroot/media/files/vafijuxepuzup.pdfIn PDF document text
    • https://smlstripedbass.com/home/rock/public_html/ckfinder/userfiles/files/garasagusim.pdfIn PDF document text
    • http://guerrazzi.info/userfiles/files/99772461154.pdfIn PDF document text
    • https://unitjaya.com/contents/files/fodujetelezuxusijozujisoj.pdfIn PDF document text
    • http://balbu.eu/uploads/news/file/refubi.pdfIn PDF document text

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