Malicious PDF — malware analysis report

Static analysis result for SHA-256 02fee9ad8b101223…

MALICIOUS

PDF

41.4 KB Created: 2021-09-18 01:51:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: d3d47a096ee50d2d83e545190bdf4605 SHA-1: 22b2f3f3c5eab3b34c64c42baebbd5c61aa0bbd4 SHA-256: 02fee9ad8b101223621acae76efe24f3fd255113493f7ca9b041189512afa312
182 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and is identified as an image-only document designed as a lure, typical of phishing attacks. It redirects to multiple external URLs, some hosted on compromised CMS platforms, suggesting an attempt to download a second-stage payload or phish for credentials. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7814

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 41 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 http://maezawa-jidousha.com/js/upload/files/68868192866.pdf In PDF document text
    • https://tattica.byespresso.com/app/webroot/files/upload/files/99422592322.pdfIn PDF document text
    • http://ipceurope.eu/assets/file/sozanu.pdfIn PDF document text
    • https://ubk-sad.de/azubi/userfiles/files/35866236647.pdfIn PDF document text
    • http://warwick-ems.org/userfiles/file/21647760111.pdfIn PDF document text
    • http://khangvietdn.com/uploads/file/93408367688.pdfIn PDF document text
    • http://skncn.com/u/files/piveluruxobazavopewi.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612e9e8a1a4ab---wurigajuvavev.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/j5rjaibf7rr6ifaqgatpg7e6n2/86155395915.pdfIn PDF document text
    • https://xn--23-6kci4asohe8k.xn--p1ai/userfiles/file/salazibudoruves.pdfIn PDF document text
    • http://barudan.hk/UploadFile/file/20210907103335709.pdfIn PDF document text
    • https://maymac.info/userfiles/file/sewomuzimusisuribonaji.pdfIn PDF document text
    • https://carsen.sk/editor_uploads/system/files/tibolomugidefinexotuzeg.pdfIn PDF document text
    • http://etpatatietpatata.com/userfiles/files/wulix.pdfIn PDF document text
    • http://cleversystems.ru/userfiles/file/76274146360.pdfIn PDF document text
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/megerub.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/mp1k5n0dhveovp96q1d8beq06g/91652884886.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/161451a4b26f90---tasisilelixa.pdfIn PDF document text
    • http://inspiredindianfoundation.org/uploads/60970084598.pdfIn PDF document text
    • http://chiesamadremarsala.eu/userfiles/files/lafudugiwivudeji.pdfIn PDF document text
    • http://www.39koratmachinery.com/file_upload/files/mokixelemezajukoxuluwuzim.pdfIn PDF document text
    • http://urbancollab.com/userfiles/Proj_Name/files/geradekug.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=modern+combat+5+apk+obb+downloadPDF link annotation

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