Malicious PDF — malware analysis report

Static analysis result for SHA-256 92f5303352dc54de…

MALICIOUS

PDF

83.1 KB Created: 2021-09-01 10:25:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b32ccbb4656437ee6d0b6044fd5f94c2 SHA-1: c2dc2b1f41f7226ae4ca4f83c3d962f13bf2579e SHA-256: 92f5303352dc54de854253216991f4ed93a09c343d9e2f2afe4ee8ce308eed89
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it likely contains malicious content. Heuristics identified it as a link farm pointing to compromised CMS upload directories, suggesting a phishing or malware distribution attempt. The embedded URLs are likely used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7974

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://pixomot.ru/uplcv?utm_term=best+loadout+for+zombies+cold+war PDF link annotation
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160db56e33349b---xobotoxaz.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bd3512b906c---vabafa.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/lgie9pks3l7eg5ta9u3ga5t1ja/37900879596.pdfIn PDF document text
    • http://aplus.to/userfiles/file/29924852536.pdfIn PDF document text
    • https://ecodiagnost.com/ckfinder/userfiles/files/xuputalatuvaxa.pdfIn PDF document text
    • http://acquadiqualita.it/ckfinder/userfiles/files/dalizomasej.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf8304e50ad---69293241064.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/10401964392.pdfIn PDF document text
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/b2bb69bc752f8bf0d10baf263e4a16c6/jevolula.pdfIn PDF document text
    • http://bsp-plovdiv.org/ckfinder/userfiles/files/tenutilukagibukilizijed.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16083385ecb122---wibojajexo.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093b3bedc101---mufanejoba.pdfIn PDF document text
    • https://marblobaths.com/app/webroot/img/files/71864801984.pdfIn PDF document text
    • https://galerie-louise.be/userfiles/files/bezemetavoz.pdfIn PDF document text
    • https://www.baust.edu.bd/app/webroot/ckfinder/userfiles/files/fufejosiriwotutolabufo.pdfIn PDF document text
    • https://marathonlaval.com/userfiles/files/sumij.pdfIn PDF document text
    • http://archifolder.com/userfiles/files/11206558595.pdfIn PDF document text
    • http://vistobrasil.net/uploads/file/fokirufefoxalo.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160af1a1759465---rurekodafusemodiput.pdfIn PDF document text
    • http://aliglobshop.com/userfiles/file/66234599060.pdfIn PDF document text
    • http://lejuriste.ru/files/file/jibemukusunufado.pdfIn PDF document text
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/24c1cf7608c26292ee55e411646a8b91/diketasug.pdfIn PDF document text
    • https://yellowstonewildlife.com/dugix.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087f8d7d18c0---93413162324.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7C 19044 bytes
SHA-256: 13922883c39571354233a21f1deb441b28104f0811f139f1543adb7163a45180
font_01_sfnt_off00012f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F6B 10972 bytes
SHA-256: a4a9bf89952c93011d3059330fcbb14d7e5a187483136b3d0f95567f53a2cc63

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