Malicious PDF — malware analysis report

Static analysis result for SHA-256 927b539b1d24e865…

MALICIOUS

PDF

76.2 KB Created: 2021-09-09 22:35:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 2fd7eb29a3c4b201a995d1cd4acb1f66 SHA-1: 2d592c142f64069fe5f375ded758eb132dab50f2 SHA-256: 927b539b1d24e8658564c8f6d059a348b4c8fb1531283ebc7e4710c5a05ec3a2
124 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically identifies the document as a link farm hosted on disposable domains, suggesting a phishing or malware distribution scheme. Numerous embedded URLs were extracted, with one pointing to a suspicious PDF file on 'maketmaster.ru'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6135

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 http://maketmaster.ru/admin/ckfinder/userfiles/files/jugasixoxotosafabipo.pdf In PDF document text
    • http://madmojo.com/fckupload/file/gulofexe.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/melqf7ol5lmtdfu3gal3pr4u21/86225812164.pdfIn PDF document text
    • http://metabolit.ru/files/file/fubasudodivup.pdfIn PDF document text
    • http://batiment-tunisie.com/userfiles/file/jasawuvo.pdfIn PDF document text
    • http://2990592.ru/ckfinder/userfiles/files/80944128952.pdfIn PDF document text
    • http://hzbmsj.net/images/upload/File/43422221138.pdfIn PDF document text
    • https://thefertilizergranulators.com/d/files/zoxemuxu.pdfIn PDF document text
    • https://sofupingame.net/calisma2/files/uploads/57845512732.pdfIn PDF document text
    • http://blccy.com/userfiles/files/tekijezonalixixeforuduwo.pdfIn PDF document text
    • http://gddfboiler.com/uploads/files/pujebumakexose.pdfIn PDF document text
    • http://xn--krmer-dnnebacke-1kb72b.de/files/file/levexagovotonojalere.pdfIn PDF document text
    • https://destockbaby.com/ckfinder/userfiles/files/vozuxezezamiteb.pdfIn PDF document text
    • http://homelife-superstars.com/image/files/xojexewurokixogukafok.pdfIn PDF document text
    • http://redactron.com/userfiles/file/duvunokidogakolasegage.pdfIn PDF document text
    • https://iaido-iaijutsu.ru/userfiles_exc/bobigef.pdfIn PDF document text
    • https://komunalno-vrgorac.hr/files/59632622014.pdfIn PDF document text
    • http://dansensvenner.dk/imagesfile///jizijozujonux.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/9ce85d3af146faa85b2dd30b1115a2c0/29474877636.pdfIn PDF document text
    • https://austdoorcaocap.com/upload/files/56796212217.pdfIn PDF document text
    • http://gps-ambroisie.com/ressource/site-image/files/46899499792.pdfIn PDF document text
    • https://ww150005.linebot.net/upfile/files/20210905063213.pdfIn PDF document text
    • https://global-product.org/CKEdit/upload/files/31725952548.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=mi+tv+patchwall+latest+versionPDF link annotation