Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed6d1cfeea83bfeb…

MALICIOUS

PDF

69.0 KB Created: 2020-12-20 05:26:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: bdcf1261154a631aa3e1794cf72715d6 SHA-1: eb639df86c37413a3599cfd1f20fe7c179f451cd SHA-256: ed6d1cfeea83bfeb619c4f0ef7a7763fcfe0541b384a3732757af67628c699e4
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, https://gettraff.ru/strik?utm_term=army+sift+test+study+guide, is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

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
  • 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.
  • 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://gettraff.ru/strik?utm_term=army+sift+test+study+guide In PDF document text
    • https://pudijeda.weebly.com/uploads/1/3/4/5/134586696/vuzivavizow.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/24f3b77f4ce8.pdfIn PDF document text
    • https://nobuwutuzuta.weebly.com/uploads/1/3/4/8/134884415/mijer_zisuvexuvuxixib_vudus.pdfIn PDF document text
    • https://bovitala.weebly.com/uploads/1/3/4/4/134497817/4206934.pdfIn PDF document text
    • https://vedixoba.weebly.com/uploads/1/3/4/8/134864822/d6c139b6d56.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/free_antivirus_for_laptop_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4055c02e-9a05-4b4e-b74c-296ee32d40a7/saboteur_ha_jin.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/16002054027.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89ad18ed-8637-439b-946a-521ba595b7bb/movoxigadogoderarutitil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41e990bc-5b18-433c-bf05-17786a0d28b2/ancient_egypt_study_guide_6th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62fd36af-3737-4b48-be85-d3ca2b3a5b90/mukozabuxoxaxurute.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/tabojonokitorurezawiga.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/asnt_snt-_tc-_1a-_2011.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/jiwop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d969185-c350-4f58-a90b-82f12100cdef/7466465642.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CA 5076 bytes
SHA-256: 22c4295da80cb7fe740b012416e21ba58ba9eee5c438a4abca6e235bb639f67f
font_01_sfnt_off0000e307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE307 10632 bytes
SHA-256: 4d0026f71dbdc6637999ee903590cbd39ccdc0c1076642fb89ac58a8ee32fbbb

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