Malicious PDF — malware analysis report

Static analysis result for SHA-256 cadf2ee207c28b20…

MALICIOUS

PDF

38.0 KB Created: 2021-03-23 07:47:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8b89ced5fae99fd281b8e15c4aa4752 SHA-1: e643ddf8b9bfed758787bf2e215704168961b5ee SHA-256: cadf2ee207c28b20574664edb570c7f6d8ae5b8456591a6853d4132f22aac7a2
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a single image and minimal text, characteristic of a screenshot lure designed to trick users into clicking a link. The embedded URL 'https://yafferge.ru/award?keyword=quality+analyst+job+description+pdf' is flagged as a malicious redirector, strongly indicating a phishing or malware distribution attempt. The file's structure and the presence of a malicious link align with the characteristics of a phishing attack delivered via a malicious attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6440

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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 38 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://yafferge.ru/award?keyword=quality+analyst+job+description+pdf
    • http://varistop.site/timex_1440_sports_watch_bandnws2h.pdf
    • http://lnstagram-office.com/beginners_guide_to_digital_painting_in_photoshop_characters_free_downloadfl9r9.pdf
    • http://kushtanash.ru/haydn_trumpet_concerto_3rd_movement_accompaniment8yfxo.pdf
    • https://cdn-cms.f-static.net/uploads/4408875/normal_60176d0c89c69.pdf
    • https://s3.amazonaws.com/povelenavuviw/deed_of_assignment_of_debt_template.pdf
    • https://uploads.strikinglycdn.com/files/1702dac4-f326-4507-8519-d483a848cb81/vakoruzafekone.pdf
    • https://uploads.strikinglycdn.com/files/408993c2-6ecc-4ea3-a960-43a7412c6622/whirlpool_duet_sport_ht_not_draining.pdf
    • https://s3.amazonaws.com/xewamejixolefaj/40994274958.pdf
    • https://s3.amazonaws.com/rotowan/acknowledgement_report_for_project.pdf
    • https://uploads.strikinglycdn.com/files/4bd4468c-697d-4c02-bcd8-39ffb6d9b605/fosajejizopupivotoxenusa.pdf
    • https://s3.amazonaws.com/jivuxo/harley_da

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