Malicious PDF — malware analysis report

Static analysis result for SHA-256 7376beb7d0e67a4f…

MALICIOUS

PDF

73.9 KB Created: 2021-06-10 01:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bc9d406b88f8008c5181123665f4e5a SHA-1: 6b36df9b4da7bdfd2b10269fd848120da19622cb SHA-256: 7376beb7d0e67a4fab939c9330ee01587e6d14790393d4d94738ad2185b7b88d
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing or malware payload. The document body, though heavily obfuscated, appears to reference content related to a video game, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://allytemp.ru/pbw?utm_term=naruto+shippuden+ultimate+ninja+heroes+3+cso
    • https://cdn-cms.f-static.net/uploads/4462345/normal_6009c7e304101.pdf
    • https://cdn-cms.f-static.net/uploads/4372696/normal_60186cc72b36a.pdf
    • https://cdn-cms.f-static.net/uploads/4392195/normal_6023d5cc2a215.pdf
    • https://static.s123-cdn-static.com/uploads/4470207/normal_6008f604a8b72.pdf
    • https://cdn-cms.f-static.net/uploads/4480589/normal_60b9c2f1d3ca1.pdf
    • https://cdn-cms.f-static.net/uploads/4370280/normal_60c0a6a60a982.pdf
    • https://static.s123-cdn-static.com/uploads/4421061/normal_5fefc14f9ab68.pdf
    • https://cdn-cms.f-static.net/uploads/4369334/normal_6066f93ad1585.pdf
    • https://cdn-cms.f-static.net/uploads/4476927/normal_600d4a870cd9e.pdf
    • https://cdn-cms.f-static.net/uploads/4367680/normal_6015e63a3f46d.pdf
    • https://cdn-cms.f-static.net/uploads/4370541/normal_60bad3250d2c2.pdf
    • https://cdn-cms.f-static.net/uploads/4471683/normal_5fd182bd3ac76.pdf
    • https://cdn-cms.f-static.net/uploads/4378830/normal_605a78047826a.pdf
    • https://cdn-cms.f-static.net/uploads/4486523/normal_5fe82cfd78c66.pdf
    • https://cdn-cms.f-static.net/uploads/4490917/normal_60367a0e479b9.pdf
    • https://static.s123-cdn-static.com/uploads/4473903/normal_60035fa380604.pdf
    • https://cdn-cms.f-static.net/uploads/4369315/normal_605572b5c40b0.pdf
    • https://cdn-cms.f-static.net/uploads/4413119/normal_605c1924f08a8.pdf
    • https://cdn-cms.f-static.net/uploads/4403960/normal_60bf33c743795.pdf
    • https://static.s123-cdn-static.com/uploads/4416789/normal_5fddc87319b8f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c877bc65-d292-45c6-bb9a-d174be720abc/coleman_80_furnace_reviews.pdf
    • https://uploads.strikinglycdn.com/files/8ff2b33c-076e-4905-a73a-654226a3eaf6/84957354855.pdf
    • https://uploads.strikinglycdn.com/files/4bfbbd2e-3172-4e5c-a22f-77712c51a4ba/jijanutesapedinipinanop.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_off0000e3e8.bin
468bb72a223831ea6f839d93b39cb0a4aa3c17089acb45191530c88d4738e1ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E8 5520 bytes
font_01_sfnt_off0000f68c.bin
b7a80252ab0ffce8378534de38252d67cff114a513cf607167e942ab5f69c82b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF68C 10336 bytes

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