Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0bf3eb783334d9…

MALICIOUS

PDF

64.0 KB Created: 2021-07-18 16:02:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: fbda96daa5a1323742427a0d5fbc8c4d SHA-1: de072ea55b99cadf29a07ec971230f98b3dc65af SHA-256: 0d0bf3eb783334d99b562f904a8767eed6bee37c7f105501f4061c177bef87ff
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is a PDF containing numerous links to external websites, many of which appear to be hosted on compromised WordPress sites. The ClamAV detection and ML classifier indicate malicious intent, specifically classifying it as a phishing trojan. The document body is heavily obfuscated and unreadable, suggesting it's not intended for direct user interaction but rather to host these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5714

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://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0c58c223f---mijumaxibilu.pdf In PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/9ruku7rmhuqkn2v30mvfaq1sfs/pujoteduligis.pdfIn PDF document text
    • http://duoctruongxuan.vn/userfiles/image/file/66087993260.pdfIn PDF document text
    • https://tempegaring.com/contents//files/15829996399.pdfIn PDF document text
    • https://dolmalatrek.com/userfiles/file/sebuwatezanisa.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/03b64b7686b8b2386d724aef1166d160/zolekiraxodubifujojab.pdfIn PDF document text
    • https://cbdc.co/uploads/ckfinder/userfiles/files/nojominaxolidakojexow.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b2805c80f06---pipul.pdfIn PDF document text
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/1e9641789db0dd85efb73b346bf72f05/kujijube.pdfIn PDF document text
    • https://dichvumoinoi.com/ckfinder/userfiles/files/20113849881.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dfa698bf56---27067665112.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160da2a0eb2c41---15732653431.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3ab4c7a548---fofufena.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/8fb2b173a3c8d4b1287709b95eaaeffb/nurajezoxodunubegoxipif.pdfIn PDF document text
    • http://orvosvalaszto.hu/uploads/files/ranofimijodijef.pdfIn PDF document text
    • https://etadelloro.it/images/file/52924342485.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a98cab34749---tepawemozamikarezab.pdfIn PDF document text
    • http://sobsai.com/ckfinder/userfiles/files/71098782703.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/wimegexumid.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608572b27ed48---62681714100.pdfIn PDF document text
    • http://daedukgs.com/admin/fckeditor/data/file/20210604142423.pdfIn PDF document text
    • https://asiarsolutions.com/userfiles/file/rakukijisak.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/lk1t3ptt8094m3hs3ajvdnq11o/bukolifuvariwipav.pdfIn PDF document text
    • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/8f0cf5fe21b83301c8665e59b29e2a20/sifumopupatob.pdfIn PDF document text
    • http://poorclarescork.ie/images/17246959375.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=east+west+symphonic+orchestra+freePDF link annotation

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