Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ef5aaa8c4c5320…

MALICIOUS

PDF

64.8 KB Created: 2021-07-21 16:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: c47466f43728c454bea83eaf69f3f768 SHA-1: 18927e3a09d890c0a6d396f4e6f92b0995282935 SHA-256: f3ef5aaa8c4c5320e6e3e45a40d60b4b9c8b6d80d8464b5431db55e1fe3d9bc0
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to compromised websites and disposable hosting, likely intended to host and distribute further malicious payloads. The file's structure and embedded links suggest an attempt to trick users into downloading malware, aligning with a spearphishing attachment attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9593

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://dichvumoinoi.com/ckfinder/userfiles/files/33146626242.pdf In PDF document text
    • https://t2sc.me/userfiles/6449364445.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/3nvibo2tggifa64vjvm7457c63/fuxer.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/2bh3kq0p4p7pvd3bi9hq48na31/33466016089.pdfIn PDF document text
    • http://scales-center.com/shop/fck_file/file/5760751429.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/05dvvc5vrtuofb5kjjuvnfuc81/bebefalitozavejap.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cb228d81be---parinosisuwefovinevedeb.pdfIn PDF document text
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095c4c4aae0c---puwebew.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084dbafc66a5---xemunomitapovativuw.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/69e45546a5099320b528f19a1ff48fa0/nuruwejotuxadubegu.pdfIn PDF document text
    • https://alrashed-alsaleh.com/userfiles/files/15661678979.pdfIn PDF document text
    • https://anakaygame.com/calisma2/files/uploads/masukedil.pdfIn PDF document text
    • http://cnc-soustruzeni.cz/files/file/wurilaxomozuzimaz.pdfIn PDF document text
    • https://yepsell.com/userfiles/files/fatem.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084505176729---selisigofuge.pdfIn PDF document text
    • http://zuche0551.com/upload/file/wovixususexemodebimik.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/9120d15bec47dbd5b85e51ad20e44fe7/66064266242.pdfIn PDF document text
    • http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aca0cb00b94---43299823920.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606eda88a1157---fipunobavivinuxagom.pdfPDF link annotation
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/c3ea64a1cb995178c3cba475e5e87dad/xomotutena.pdfIn PDF document text
    • http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607119aec3e47---32413981154.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/94511970113.pdfIn PDF document text
    • http://kiuruvedenlukio.fi/tiedostot/file/78022977826.pdfIn PDF document text
    • https://aakritidigitals.com/userfiles/files/luxozenanul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=crossword+puzzles+answers+and+solutionsPDF link annotation

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