Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0639153caf72349…

MALICIOUS

PDF

79.0 KB Created: 2021-07-07 21:37:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 0de76eb84d392411b9a1cb26a9dc22af SHA-1: 1ea475b21aecb170106e56825480fb7fc1cf68a4 SHA-256: f0639153caf723496a4be2946a53196f5e9826edc0473f783f700cccd95de4b8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites acting as link farms. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classification also flagged it as malicious. The presence of multiple links to potentially malicious content suggests an attempt to lure users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5366

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 https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/1b6c087980cb97cdece8778c2375b927/dukotujekoxepizug.pdf In PDF document text
    • https://rivaflo-south.in/userfiles/files/60089522563.pdfIn PDF document text
    • http://lumieretvie.com/userfiles/file/xizaw.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/dade8d51ac1b042accd904ec59bfeecd/76807156091.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/a7c66ccb78f8694ed4fba4aa7c16e541/93747196954.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/elt4h8tk7tpd9q5u110f152aqp/22287958517.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/ee4054c04fcc17222399c9dd334479cd/71912810437.pdfIn PDF document text
    • http://aligokdemir.com/resimler/files/89351861269.pdfIn PDF document text
    • http://chanakol.com/ckfinder/userfiles/files/wosuwuxagovexifovixubebi.pdfIn PDF document text
    • https://an-professional.ru/img/files/file/14503142511.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/15936511509.pdfIn PDF document text
    • https://fajanav.com/aym_image/files/zuvotevajofatagisili.pdfIn PDF document text
    • https://fonixkoncert.hu/upload/file/65761011262.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/jisez.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/e67240de4e6eaf4efa519b8aaccf0745/divofigevalevawogokatu.pdfIn PDF document text
    • http://zonweringnederland.com/ckfinder/userfiles/files/turorujutuwamifajofap.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a68f1d80309---87439327368.pdfIn PDF document text
    • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/ls6o8cqgm94d6lcihr7gfar2hs/9645285408.pdfIn PDF document text
    • http://nutricion-intravenosa.com/wp-content/plugins/super-forms/uploads/php/files/4120de131498f509683325ddc0f7904c/53187602688.pdfIn PDF document text
    • http://insfilings.com/skyzone_classic/upload/files/34986909427.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160854eb6dc10c---rigokukozanoduvebibu.pdfIn PDF document text
    • https://schilderlesvakantie.nl/ckfinder/userfiles/files/timomoji.pdfIn PDF document text
    • https://bhsbeacon.com/FCKeditor/file/1895947325.pdfIn PDF document text
    • http://modern-pro.ru/files/file/zegorixadisa.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/16093909b8a393---64402139957.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=can+i+askPDF link annotation