Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1d2dab1cb681c66…

MALICIOUS

PDF

54.0 KB Created: 2021-09-03 21:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 851cee28e3f686a4f45e18c204bcda9a SHA-1: fc0baf3dc7c89cc718507728a1327d642ba49ecb SHA-256: d1d2dab1cb681c66c88d33aa217fa150b6cf360523291bea6f141dfe40762245
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as a phishing lure, likely designed to trick users into clicking embedded links. The document's structure and the presence of numerous links pointing to compromised CMS upload directories suggest it's part of a campaign to host malicious content. ClamAV detection further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4912

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
  • 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 53 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://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610c43245f56e---3614144736.pdf
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcb4f5df72c---xezeraji.pdf
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/dabf3fa9d43c9f3672558fe1fdd00512/76483983225.pdf
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/d60aa32469ad59d775cdc2e991ac6015/xijemupojajepamituf.pdf
    • https://ludifrance.fr/userfiles/file/55807173954.pdf
    • http://poaglasses.com/uploads/files/202108310832154609.pdf
    • http://kmbb.at/userfiles/file/15552957794.pdf
    • http://architettoangeli.it/userfiles/files/zewazosudide.pdf
    • https://aeternoplanning.com/ckfinder/userfiles/files/95125650646.pdf
    • http://maremio.ru/admin/ckfinder/userfiles/files/31320231872.pdf
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1613122cd0979f---wisupalaripete.pdf
    • http://kirilmazbardak.com/userfiles/file/wuzefuzap.pdf
    • http://www.deep2001.com/images/library/File/55586199950.pdf
    • http://arqing.es/ckfinder/userfiles/files/19323499456.pdf
    • https://capital-tic.com/upload/ckfinder_temp/files/20210528051353.pdf
    • http://parfumerieindex.nl/images/uploads/24677087254.pdf
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073d0954262a---68887854227.pdf
    • http://bularz-auto.pl/images/userfiles/file/45001533550.pdf
    • http://shannonlakeestates.org/fck_images/file/jibixefexobemi.pdf
    • http://mp-journal.com/media/file/totaxoraberelusafuveb.pdf
    • https://ph2020.org/FCKeditor/file/dajojara.pdf
    • https://iominneapolis.com/wp-content/plugins/super-forms/uploads/php/files/30224c79fe973b416ee2e1d4a93585a8/49412045741.pdf
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16096e53b240b3---56290354207.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=samkhya+philosophy+pdf
    • http://e1pl2.nazwa.pl/busy/fotki/file/dopox.pdf

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