Malicious PDF — malware analysis report

Static analysis result for SHA-256 b30ab9427b9dd723…

MALICIOUS

PDF

67.2 KB Created: 2020-11-20 03:01:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 09e38099f04192b9a730cc2fc6a89db9 SHA-1: c796fc9f382ac6e1f11363c44f8e9dedf4bd4004 SHA-256: b30ab9427b9dd723af902ded977d4b155d203290c907b0cd798cd578a0e73b37
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/123?utm_term=bodybuilding+forum+misc+beautiful'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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 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://cctraff.ru/123?utm_term=bodybuilding+forum+misc+beautiful In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388839/normal_5fa53d5e8bccf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/65b05650-c716-4cea-a4e2-3003b4a42bdd/66328756244.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/cedar_rock_park_burlington_reservations.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/40867005861.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8cce512-018d-48d6-9b65-a4917ce3f9ee/rezisomototezasunikixuk.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/55647566537.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8ed04c8-adfe-43ed-acd6-a87193d519a8/sewenafa.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/salem_town_and_salem_village_tensions.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/approach_and_avoidance_motivation_and_achievement_goals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f71910d1-e0cc-4391-b253-2950d4259fb9/pokemon_sword_guide_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acafcb5a-5940-44a6-aa2c-3776fdc06861/fuladaxosimevuburutuxut.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/memipefikopimukolus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdfb0bfa-51cf-468a-acff-901268153826/sukurorawatu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA4B 5632 bytes
SHA-256: 7d5bd6ba0ded8c9d138c25f23bcc6908b9753d0cc627e0ce5a2c268ac08441c9
font_01_sfnt_off0000cd65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD65 4860 bytes
SHA-256: 7d24d34d4670f16dc366b3fa8a837f34076e30bce8bd44b7fd1a087849edf676
font_02_sfnt_off0000da9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9A 10864 bytes
SHA-256: 76f16873bca4e2518cce5ba253ff93ecee61309f6e7c43ddf4b3711de102d4dd

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