Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef6fe4e3322a22c…

MALICIOUS

PDF

62.3 KB Created: 2021-09-08 03:08:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 5a5570daff043dfccc9953ae0122206e SHA-1: 98dc3d2288b34ac1acefda2997af1115513d0c6b SHA-256: cef6fe4e3322a22c69ae612702d0bd80c53e9c00200f205918f042c6413c1fcb
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to compromised CMS upload directories, suggesting a tactic to host malicious content or redirect users to phishing sites. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely related to phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6040

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 http://baohanhranghm.com/upload/img/files/58412323258.pdf In PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/7e707d0f5eb81a671d6f00c8448f9c55/jifodopepalurexeg.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16134a6839ce0d---wagotovavuzusolevaxodo.pdfIn PDF document text
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/d3ljlm2ovu43lgkda7hjf6ppto/47090619167.pdfIn PDF document text
    • http://ssteelelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lejusisoromefulujokez.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b30c8e302---89147139620.pdfIn PDF document text
    • http://pazarziraat.com/userfiles/file/setepudu.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c6cc0f13a29---48587787550.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/81291d2ae7e8825b476eee474660678d/27026537482.pdfIn PDF document text
    • http://www.bandungmesin.com/file/zovisebexot.pdfIn PDF document text
    • http://dabbleanddesign.com/clients/c/c6/c60e280709801842a26e47e23f21f170/File/wujusulunerozovoni.pdfIn PDF document text
    • http://aaykpn.com/uploads/editor/files/24515945298.pdfIn PDF document text
    • https://purmoradiatoriai.lt/images/files/donavukekex.pdfIn PDF document text
    • http://banghetretunhien.com/media/ftp/file/tasunoxot.pdfIn PDF document text
    • http://28777886.com/Lpf/UPFILE/userfiles/files/4114388681.pdfIn PDF document text
    • https://tungafilm.com/dorceiys/ckfinder/userfiles/files/59542877266.pdfIn PDF document text
    • http://bogelaipigeon.com/upload/file/femufemozikusa.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af7bbeacef2---ganulujaj.pdfIn PDF document text
    • https://www.avantagesapp.com/uploads/files/talexev.pdfIn PDF document text
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/eaab540d3685fc2d928e5d0dce52a5a1/susurazagisilowox.pdfIn PDF document text
    • http://malbreil.com/userfiles/file/7524806260.pdfIn PDF document text
    • https://joebalogh.ro/imagini_ws/julubonolilev.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/27141205da33db4f3dd1e7caef7aea5e/11989156656.pdfIn PDF document text
    • http://akvari-um.ru/userfiles/file/dolenogegazuwufi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=free+long+division+worksheets+with+remaindersPDF link annotation

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