Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbea3d03143b08e4…

MALICIOUS

PDF

45.6 KB Created: 2021-09-20 21:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a3e646452ebbc16abd898599eda552f1 SHA-1: 40cd1cedb5662dd4007d5289822876795635e6f1 SHA-256: fbea3d03143b08e436dc47e1021d36290f6d1eb27f4669fde127ee5590f6fede
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and a machine learning classifier. It functions as a phishing lure, presenting itself as an image-only document with a clickable action trigger. The document contains a link farm pointing to multiple distinct hosts, many of which appear to be compromised CMS upload directories, suggesting an attempt to distribute further malicious content or phish for credentials. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7355

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 45 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://eqletstalk.com/uploads/files/202109092129248599.pdf
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b75052b28d---23398755700.pdf
    • https://espritgt.com/userfiles/file/7875184941.pdf
    • https://renebeumer.nl/userfiles/file/kuxegegewuwegebavo.pdf
    • http://godsownproperties.com/userfiles/file/85694657213.pdf
    • http://smenergy.kr/uploaded/file/988386236132e7bfb0f70.pdf
    • https://thuhuonglacquer.com/uploads/news_file/vilibepijividuvuvolami.pdf
    • http://wccflooring.com/userfiles/files/faditidojuv.pdf
    • http://clinton.abwingsmd.com/uploads/files/30143396577.pdf
    • http://surtek.biz/image/files/20150319_080930.pdf
    • http://pijntherapie.be/uploads/files/81636112775.pdf
    • http://sanga.asia/userData/board/file/lujolapeligavugozojunoviv.pdf
    • http://laros.cz/UserFiles/file/bibemedufo.pdf
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/0i3imvut1rbkg9d7t0tkan18l3/66412471793.pdf
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/0b598c45f1335b693640760739c02e03/37931813032.pdf
    • http://westernstudioservice.com/admin/userfiles/file/mokulozemanoselazixoju.pdf
    • https://flomogroup.com/upload/files/33263491599.pdf
    • http://smenergy.kr/uploaded/file/345991061613bb304e006c.pdf
    • http://goksirkrupskimlyn.pl/img/upload/files/jopeg.pdf
    • http://intranet.uts.edu.co/portal/app/ckfinder/userfiles/files/kezerelowupotosiwer.pdf
    • http://compagniaviaggi.gattinonimondodivacanze.it/themes/userfiles/files/67622351441.pdf
    • http://ibb-online.ru/f/file/neravuneresuzujujunas.pdf
    • http://khamtribacninh.com/images/files/96055009552.pdf
    • http://kunjipsc.com/uploads/files/digadojubakefofobodapu.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=how+to+text+internationally+for+free+android

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