Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9cb5ecd214bd784…

MALICIOUS

PDF

40.2 KB Created: 2021-07-06 03:53:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 35ed463e917ffed0888730deb88e77ff SHA-1: 2c2b59a2c47570030457e0a81bed7eca38218132 SHA-256: d9cb5ecd214bd78482f380b64c37e98b2bd8d27a4240374b1b7e248565e34154
174 Risk Score

Malware Insights

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

The PDF exhibits characteristics of a phishing lure, including being image-heavy with a clickable action and containing numerous links to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded links likely serve to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8759

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160949516b904e---jefojuminaf.pdf In PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/96e6f05e05db7189eabc9090e6a57796/gepurajinarunejoturopu.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/97b1e1fbbed5498f880b29fb355e191f/5037077599.pdfIn PDF document text
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/rctqmsfm1ksqot48bhb8k9rrp0/ravuri.pdfIn PDF document text
    • https://thingstodobahrain.net/ckfinder/userfiles/files/dasisiwowavutimo.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/b1dad9a5d9275d66da2814117c2a7119/lijuwa.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b23041759b3---kalaluvopebo.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a62ee92f019---27593498246.pdfIn PDF document text
    • http://precedent.by/_newsite/images_from_html_editor/file/jusemewuvonawovajaguf.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16083295677157---lopodanega.pdfIn PDF document text
    • http://citadelcaralarms.com/userfiles/file/tapaboserekesefoz.pdfIn PDF document text
    • https://vresponse.net/userfiles/file/najalinemuzosajuwof.pdfIn PDF document text
    • http://microcement.ua/userfiles/file/31334595820.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/godajepavekujerefesir.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e99726407c---lilemibirubajesawen.pdfIn PDF document text
    • https://kildevangen.dk/files/desufoxekemutiresase.pdfIn PDF document text
    • http://gshosnab.ru/userfiles/file/xumapupoka.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606cce0a131c5---95201287910.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/forIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=meaning+of+akanPDF link annotation

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