Malicious PDF — malware analysis report

Static analysis result for SHA-256 577a0239693263c9…

MALICIOUS

PDF

47.8 KB Created: 2021-10-03 04:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: dd270bc6c5e0ea67d41deb0054b8e637 SHA-1: 3bd93bb1673b757f05c7b18594a1c50c616136fb SHA-256: 577a0239693263c913c31a8517c6a8aed7db73a62dd87dc2bfcaeda2268b02d0
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document employs a common phishing tactic by presenting itself as an image-only lure, designed to trick users into clicking a link. The embedded JavaScript and numerous external URLs, many hosted on compromised CMS upload directories, strongly suggest a phishing campaign aimed at credential harvesting or malware distribution. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6441

Heuristics 7

  • 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 2 text block(s), carries a click-outward action, and is only 47 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/fb6993abf4a125efa6d7df99cb75ccf1/turitegexuporu.pdf In PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/28ecc6770f1e964230cba2fbfa0265fc/43041062747.pdfIn PDF document text
    • http://indyskischool.com/ckfinder/userfiles/files/teputepimivugufagivimaviv.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16139838b8326e---82319538618.pdfIn PDF document text
    • https://jlgardner.org/home/jlg/public_html/ckfinder/userfiles/files/mimeramozakibu.pdfIn PDF document text
    • https://businessincasey.com.au/application/third_party/ckfinder/userfiles/files/28788183771.pdfIn PDF document text
    • http://apicn.net/upload/files/vewiserubuxuden.pdfIn PDF document text
    • https://tranthachcaodanang.thicongmaiche.com/uploads/image/files/53418343937.pdfIn PDF document text
    • http://amghanoi.com/images/ckeditor/files/sumikeje.pdfIn PDF document text
    • https://olterus.com/contents/files/71303499152.pdfIn PDF document text
    • http://lerucherdesanges.fr/userfiles/file/gojipirizedovolaz.pdfIn PDF document text
    • http://n2nnetworks.com/files/others/somutuforisejov.pdfIn PDF document text
    • https://cardolf.ro/files/dudopotelexafawuwuzox.pdfIn PDF document text
    • https://wheelmartthailand.com/image/upload/File/jirapam.pdfIn PDF document text
    • https://amzentransportationindustries.com/admin/imagetemp1/file/97198857242.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1613c550f4edb8---vemadefajidubifavopiniruw.pdfIn PDF document text
    • http://mamaskitchenorder.com/uploads/files/75621191647.pdfIn PDF document text
    • https://ataru.site/js/ckfinder/userfiles/files/25825827817.pdfIn PDF document text
    • https://mimpiindahsatu.com/contents/files/vaguradopasimiwigo.pdfIn PDF document text
    • http://quangphong.vn/uploads/image/files/janewidilanofurubaxa.pdfIn PDF document text
    • http://sys-svinding.dk/userfiles/file/foferesi.pdfIn PDF document text
    • https://esperanzadeavila.com/fotos/file/mamifujarabegumagal.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161378d75086a3---wovosopi.pdfIn PDF document text
    • https://www.dogandemir.av.tr/paketler/ckfinder/dosyalar/files/rabisutujirabunonobilebe.pdfIn PDF document text
    • https://infotechb2blite.com/bot/ckfinder/uf/files/45608901506.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=street+photography+contestPDF link annotation

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