Malicious PDF — malware analysis report

Static analysis result for SHA-256 29a02101dfda3dc2…

MALICIOUS

PDF

79.6 KB Created: 2021-07-01 16:46:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 79bfb4efb92d20b01de9267c02126028 SHA-1: 77c01b507e0e4548afdb116b168cd9cec3b44b4e SHA-256: 29a02101dfda3dc28e2ad7ba939140aaf622dead5b4aa7e6baaf677160b3e70f
164 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to external websites, many of which are hosted on compromised WordPress installations or disposable domains. The ClamAV heuristic identifies this as a phishing trojan, suggesting the links are intended to lead users to malicious content. The presence of 'utm_term' parameters in some URLs indicates a potential phishing or spam campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4550

Heuristics 6

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://philabc.ru/uplcv?utm_term=open+pdf+in+autocad PDF link annotation
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099a5dd2c2cc---14466151910.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160931b3b35a6d---votofegulutojozenu.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609a3f606f999---80338353048.pdfIn PDF document text
    • http://1hozain.ru/files/userfiles/files/72212494884.pdfIn PDF document text
    • https://cafe-malaysia.com/contents/file/16053403689.pdfIn PDF document text
    • http://popnmusic.fr/userfiles/file/mefebazutab.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/fe32801790f917b2539b1079938c5f12/2653068835.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/ljff5uh7r9ksfcjgb2lf61mkk7/72218813344.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608200860f3f7---40840080467.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160799eb5c44ae---kibilenuxi.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca79141b8a---nipokoz.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/pu5vp0d4fkh15lh1ehcdf9kl7e/sajaxakixudubul.pdfIn PDF document text
    • http://cuadepthanglong.com/images/ckeditor/files/16652877579.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/a41cfee2b713863142c69f61ef966447/77906055831.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/uedarbk4v8ju78g8jc20u0i812/rusuwufelowagokukajiwe.pdfIn PDF document text
    • http://elskenecologie.nl/files/fumafazosulabemusebepo.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087fc4dac042---88578871141.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f4abff2d23---79177101732.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/6d217d4d7ed68a9b01101ccbd2f5d18f/buxapisesone.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4ad25d891---10864510818.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/xajarizufajukaxifekos.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/7eb3673edac45f92b0b56c9bbf402e10/kefimaxadikuzexo.pdfIn PDF document text
    • http://www.asap-recruitment.net/upload/file/reworawuvurugodixe.pdfIn PDF document text
    • http://kielcenoca.pl/files/file/bodokes.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16076acb70724f---28073679859.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16072ae8769ba2---gexujomedutobasurix.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baecc877a43---5116782629.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDF 18156 bytes
SHA-256: 865f58d3856ae669241988694d7259f9c40824401e3be33128fa78e1c32b3772

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