Malicious PDF — malware analysis report

Static analysis result for SHA-256 491be801b2771c13…

MALICIOUS

PDF

55.0 KB Created: 2021-07-27 18:30:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: c94916be9f382bd8430ad5cdb593a114 SHA-1: 2d0b3887941e5dd5fd7fe6f21f51331543206bb7 SHA-256: 491be801b2771c13aec6ce596218f4ae509536c7638a01d7517c633382994d84
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to direct users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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://holocaustresearch.pl/nowy/photo/file/44670988106.pdf In PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/d7c148nplh6dksmhf4m5196hu3/54531586959.pdfIn PDF document text
    • http://klpa.net/userData/board/file/34292078011.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/3716e7844fe7b9e610f813c21f7498b1/10324308467.pdfIn PDF document text
    • http://ohappy.org/userData/board/file/54168670599.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad2329b426a---71060288597.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c05f7cf0346---71047394932.pdfIn PDF document text
    • http://thetachikappasigmaalumni.org/clients/5/56/56ac51e2ee760b54d3ff8b7d53c877b7/File/21786371746.pdfIn PDF document text
    • https://amthanhanhsangchinhhang.vn/upload/files/povufuwujewiwovamujelotov.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/drlauceckupsmipqaqf1gtqv01/16980742071.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/bb48af81c8be7857589131642855d629/59007220030.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/0b51445111aa9dc744c6ff1e4a82cee6/jojebigozidoxajajigese.pdfIn PDF document text
    • https://telenovella-bg.com/files/76280961876.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/3s7tpqe74r593h04648l4n587s/niboxinefowa.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/18aa7e40392f85fd9c8bd44a49670d7b/439527946.pdfIn PDF document text
    • http://stinpo.com/ckfinder/userfiles/files/lareweb.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/bac8fa5e386ecf220186492912019beb/nisobumuxipixavutovube.pdfIn PDF document text
    • https://vietnaminsight.biz/ckfinder/userfiles/files/fenulizujozepavuxibebadu.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7ec368faea---87083728042.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/75685194530.pdfIn PDF document text
    • http://rymwid-training.com/userfiles/file/nolosajavomifid.pdfIn PDF document text
    • http://cogersquest.com/clients/f/f6/f6194b381802d71b6842d6160e8859b1/File/guxuxiz.pdfIn PDF document text
    • http://kimbuunguyen.com/uploads/userfiles/file/10550354617.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/441a4e326706b3d13e64f083184df530/2334605422.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=honeywell+6160+custom+alpha+keypad+manualPDF link annotation

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