Malicious PDF — malware analysis report

Static analysis result for SHA-256 50fc6687b94b296a…

MALICIOUS

PDF

48.0 KB Created: 2021-09-05 10:53:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7824f7f25b51921b58332d582d2ec40a SHA-1: a2a65f2c88a59bb1a0d954d2d2b57447cfeec042 SHA-256: 50fc6687b94b296a17d18857d264a098be19c44c7e75f8f89614c68f025904e8
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains numerous links pointing to compromised CMS upload directories, suggesting an attempt to redirect users to malicious content. The PDF's structure and embedded links indicate it is designed to trick users into clicking through to external, potentially harmful, websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7378

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 48 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 https://pistant.ru/uplcv?utm_term=clinton+v.+jones+pdf
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c97efd953eb---mafesexegivotopujatulofe.pdf
    • http://dgjinhak.kr/DATA/upload/files/202107061117444081.pdf
    • https://gentrilieu.vn/userfiles/file/69599348899.pdf
    • https://nepalonetours.com/userfiles/files/gabepawolufezu.pdf
    • https://www.cittadelmiele.it/wp-content/plugins/super-forms/uploads/php/files/f7cbd25dfeee692789f2d0c6894a8717/nezan.pdf
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/039ccb5e0099ff1bc2452836fadfa4eb/17428420794.pdf
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af93a5cb1f5---kobenawexesuwivup.pdf
    • http://konferencii.org/web/uploads/assets/file/melididozufozabapupazemu.pdf
    • http://alemotta.com/resources/original/file/tutulujisa.pdf
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/f2lho69s24qkc48t5lshll89v5/21621262336.pdf
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5335061d4---88865821654.pdf
    • https://lasvegasrebath.com/wp-content/plugins/super-forms/uploads/php/files/43fefbd43998ae68307df51460d306bd/zejim.pdf
    • http://agriturismocorteerbatici.it/userfiles/files/janofomiroxofog.pdf
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a97f3818e0a---joxigabobogonojexeginem.pdf
    • http://abwmechanicsville.com/uploads/files/59149054845.pdf
    • http://asremajazi.com/uploads/files/10190071737.pdf
    • http://nigerseedindia.com/uploads/lomitekojafutodo.pdf
    • http://chanakyaaerospacedefence.com/userfiles/file/wupifuwitedibefawitewama.pdf
    • http://stalmost.pl/userfiles/file/4635176813.pdf
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/cp5apblbe9rvqtqq8fps6r0u36/50164886598.pdf
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/pmc5dahdpl9evoeisf7ih31mnj/kalejilajatenitivu.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/bbcc5b77c15c8529755d94e07f8986cd/35298697955.pdf
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a1a3ed082b---xutefarotakujodixus.pdf
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/e83735559496dbd259654946983e1282/fekidiledizitixa.pdf
    • http://biosafety.biz/ckfinder/userfiles/files/16547272965.pdf

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