Malicious PDF — malware analysis report

Static analysis result for SHA-256 229660ed39d07bc0…

MALICIOUS

PDF

66.9 KB Created: 2020-12-17 00:10:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a09a9684feaff214450227160038b916 SHA-1: d2e3b71135b6b2c7d0948dbdb5a06d6417449d27 SHA-256: 229660ed39d07bc02833cddc84bb3620af7d9f1b0eeb6204373f4d9d473cc310
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that directs users to a suspicious domain, likely to host a malicious payload or phishing page. The document body, though heavily obfuscated, appears to reference a carpet cleaner manual, serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://trafftec.ru/strik?utm_term=bissell+proheat+12+amp+carpet+cleaner+manual
    • https://cdn-cms.f-static.net/uploads/4382004/normal_5f8b3e38d84a5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/44ce9c63-bbc1-4054-9e18-9ecc33b99514/galpin_rocket_mustang_price.pdf
    • https://uploads.strikinglycdn.com/files/c434f91d-bc2c-435c-82a6-445eb2462cfa/41970795878.pdf
    • https://uploads.strikinglycdn.com/files/c0a392e7-4f2e-4d87-b855-c04cfefb3237/wemototiwujoliduraporagat.pdf
    • https://s3.amazonaws.com/defipedibe/money_word_problems_worksheets_for_grade_2.pdf
    • https://s3.amazonaws.com/wusigipufuvowix/google_chrome_apk_versi_terbaru.pdf
    • https://s3.amazonaws.com/sanekufiwumafo/14939858378.pdf
    • https://s3.amazonaws.com/tenunud/cover_letter_template_for_job_application_free.pdf
    • https://s3.amazonaws.com/juzinaramip/dufuwavuruzuzof.pdf
    • https://uploads.strikinglycdn.com/files/7d0e4803-cd08-4300-b30b-d1a27b871024/siwekuxozuvavikadumisuf.pdf
    • https://s3.amazonaws.com/jivamubug/bang_bang_mp4_song_bestwap.pdf
    • https://uploads.strikinglycdn.com/files/61fc08dd-4a60-4b38-a9fc-e04fbe579439/30264154480.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6c4.bin
66296a5faca568c9bf31462dbdb8100ea8933f28e086db2dd97db92c0e7f554a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6C4 5408 bytes
font_01_sfnt_off0000d900.bin
8ab938a442a9a68c6063e2747835ac170882e2cc7542463b026c471ccb291e23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD900 11348 bytes

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