Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c80f4d99364f414…

MALICIOUS

PDF

70.7 KB Created: 2021-02-22 06:52:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dfb02c2c772f2ec85e3fbdd258a5db0a SHA-1: 801304af141c09ec74b9999ae33e85fadbe76189 SHA-256: 8c80f4d99364f41412ee70daad02c0a4165873b90437a5219c098fe1fcb49e84
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/wix?keyword=the+corsair+curse+guide
    • https://wovupidej.weebly.com/uploads/1/3/4/6/134687137/9611997.pdf
    • http://towumodoxilokox.22web.org/varulaso.pdf
    • https://musibagufes.weebly.com/uploads/1/3/4/5/134587398/jebimodid.pdf
    • https://cdn.sqhk.co/wepigosogo/eigic11/99652651903.pdf
    • https://cdn.sqhk.co/nimuxugemu/bgiidgc/ringtone_maker_apk_mod.pdf
    • https://fixasamajiwige.weebly.com/uploads/1/3/4/3/134318971/kimotuzofosalezu.pdf
    • https://cdn.sqhk.co/dewavasese/djfighh/9210743512.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sumesawoxajew/answers_to_questions_about_adversity.pdf
    • http://lugopupi.rf.gd/jalisixinikoxalekemokemu.pdf
    • https://s3.amazonaws.com/jezobasit/bitomofewafodilifap.pdf
    • http://lajefuvubesij.epizy.com/tigesujejibuzalibaxe.pdf
    • https://s3.amazonaws.com/sizabo/wameges.pdf
    • http://kumibapu.epizy.com/firalujasejisetavurazo.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_off0000dc04.bin
030578904ccebf063dbbe2d232caeae6701d7382d9742a1890f4e7b38a285965		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC04 5116 bytes
font_01_sfnt_off0000ed60.bin
48954a0fd5c5c74830dc555bfb92a659cf5bfe3a9e84dbe0b8003fe0031e5f0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED60 9676 bytes

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