Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5866302bc02a39e…

MALICIOUS

PDF

82.7 KB Created: 2021-04-06 11:59:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f06d8d4d4e414cb91a18e1dbe8dc1f5c SHA-1: eb761a9d40721192f50b9529478e61bf10101046 SHA-256: f5866302bc02a39ecfb9b2a11cfb52836a0498a1a627dfa035791e34a57259dc
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to search terms, suggesting a social engineering tactic to trick the user into clicking the malicious link.

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
  • 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://xajibur.ru/aws?utm_term=chinese+dirt+bike+dealers+near+me
    • https://cdn.sqhk.co/putuziboki/fRjbTje/16426221387.pdf
    • http://mibilivo.scienceontheweb.net/84291865198.pdf
    • http://filmera.ru/brad_pitt_house_new_orleans_addresssf2yx.pdf
    • http://grinallex.shop/black_panther_full_hd_wallpaperdxjal.pdf
    • http://getplafond.xyz/99006384018q2vt0.pdf
    • http://lazujifoxupa.getenjoyment.net/direfizupukidewofavo.pdf
    • http://defokozixeral.sportsontheweb.net/nedevaruvedodujoza.pdf
    • http://faceit.su/32173112741r1y9f.pdf
    • https://cdn.sqhk.co/xekixuzurim/mIXytXP/20804058638.pdf
    • https://cdn.sqhk.co/lewuravasu/jbhcCig/40614800014.pdf
    • https://cdn.sqhk.co/giboxikewev/emjdq1q/73622850402.pdf
    • http://getveran.site/how_to_root_kali_linux_2020.2p0byd.pdf
    • http://jijomaj.getenjoyment.net/73173370504.pdf
    • https://cdn.sqhk.co/nanagajog/hcMijq9/wiwenipefuvufefod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://ac263381-fdad-4fda-ae78-6df6d71032d6.filesusr.com/ugd/25c42e_1f71e1e7b2104c098e51de1ea95674d5.pdf?index=true
    • https://s3.amazonaws.com/vatakefojunib/vuwajonusuniwirokotuge.pdf
    • https://s3.amazonaws.com/jiwisi/leaner_bigger_stronger_review.pdf
    • https://2489a575-72f7-492f-b117-28cfe4a4d2a3.filesusr.com/ugd/d81705_0228a77c6e8c42999d79b987e0113fee.pdf?index=true
    • http://vovojoj.atwebpages.com/anatomia_humana_cabeza_y_cuello_tomo_1.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_off000106d9.bin
d23a78435c86418891bddfdc6c9e28b5583fc96fe632611e7144bb7086e26b30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106D9 5176 bytes
font_01_sfnt_off0001183a.bin
a5e63dd449a8123f937b0820d045a6d71f9141542c58fe81e2952ab578a08941		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1183A 11040 bytes

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