Malicious PDF — malware analysis report

Static analysis result for SHA-256 de969c1f36e5fe61…

MALICIOUS

PDF

76.2 KB Created: 2021-07-23 03:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 2fe29859a67296f8e9b17be1c452a92f SHA-1: fc7e32f36cf47894f56a16969b26719a8ccb5495 SHA-256: de969c1f36e5fe6141339f8ecd657af6073ce179e39038681617f3892dacb993
124 Risk Score

Malware Insights

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

This PDF file was detected by ClamAV as a phishing trojan. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to various websites, some of which appear to be compromised WordPress installations. These links are likely intended to lure users to malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4746

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://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb7daaf026---32543417418.pdf In PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/a1d2b8f6fe522e0abf0fc974087a819b/23841577479.pdfIn PDF document text
    • https://webmenuplus.com/images/file/64598822671.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b05cbd3455b---purosopazodimeponoke.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d93e835b766---vipakuvavivorezekoxawi.pdfIn PDF document text
    • http://slp61.com/clients/e/e2/e296dcecfd7d10ffef0cc83fef253c72/File/98539210239.pdfIn PDF document text
    • http://fructusartis.com/i/File/73043495050.pdfIn PDF document text
    • http://johnlillylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gewejetebitomeresezo.pdfIn PDF document text
    • http://thaoduocquyhiem.com/userfiles/image/file/tuvewarebizetawab.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092ca17c043e---21713886575.pdfIn PDF document text
    • http://prestopc.it/upload/file/kumojakagopajogutaxew.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/719e3754c4b1657f1fa7f64191e4058b/15369580629.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bdf64f57f59---19761232158.pdfIn PDF document text
    • https://watosaphotography.com/app/webroot/userfiles/files/20210704_230119.pdfIn PDF document text
    • http://sintellect.ru/Repository/file/811384704.pdfIn PDF document text
    • http://marinapogon.pl/upload/file/konusa.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608541fddf64a---gukomix.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/ohcaoja01cugvvq3l7mkl2ps8s/32234669158.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/d2c8a2d3cc3004fa4470d8b4b949d6a7/topitogiperimolapunamoxam.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c31cd63082---42870468244.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/274fcf5db07d8bbc4ebac031fd0289c2/rowol.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607d471f672c4---73234412057.pdfIn PDF document text
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d9aedfb27---23006931228.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608e41d5a7c84---xudamirobolaxexuzipidola.pdfIn PDF document text
    • https://loctra.net/userfiles/file/51259890043.pdfIn PDF document text
    • http://mid-europe-ex.com/images/blog//file/rekupediwirel.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/7sg2h625clffnceuf9fejrd3br/bibaliboxoxukaba.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=it%27s+christmas+baby+please+come+homePDF link annotation
    • 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_off0000fa3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1