Malicious PDF — malware analysis report

Static analysis result for SHA-256 756a0e2122f84c4b…

MALICIOUS

PDF

78.1 KB Created: 2021-02-15 07:07:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bbfc4186ad960e21c66e3538b2e981a SHA-1: 73f1bfaa67322053ef9f48c1b114af6f1b06572c SHA-256: 756a0e2122f84c4bcb41127ac432b3a50ecf4e97f3c2fa308156c7f1f622ddf4
96 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. 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, contains references to game-related terms, suggesting a lure. No scripts were extracted, but the presence of external URIs indicates an attempt to redirect the user to malicious content.

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://seumenha.ru/wix?keyword=vanilla+priest+talent+build
    • http://thecet.xyz/seger5keje.pdf
    • https://wotawodakel.weebly.com/uploads/1/3/5/3/135316359/9784570.pdf
    • https://static.s123-cdn-static.com/uploads/4500444/normal_5ff7a4ff4c31c.pdf
    • https://cdn.sqhk.co/nejisakatok/heJwQgj/24834096631.pdf
    • http://contact-git.top/krane_modern_physicsc2qs1.pdf
    • https://nivujetomut.weebly.com/uploads/1/3/4/7/134753784/6260880.pdf
    • https://faboduvo.weebly.com/uploads/1/3/5/3/135343103/58ff7908122.pdf
    • http://eushopvmn.site/igi_2_game_size3canx.pdf
    • https://static.s123-cdn-static.com/uploads/4410730/normal_5ff5620aab77e.pdf
    • https://cdn.sqhk.co/fadejiweruw/cij2Mia/26812815054.pdf
    • https://xurekibovadava.weebly.com/uploads/1/3/0/9/130969225/semeropizupamod_siton.pdf
    • https://putofikanavo.weebly.com/uploads/1/3/0/7/130738484/4310251.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nejegidijikoj.epizy.com/calendario_liga_nos_2017_18.pdf
    • http://bolopanezodubun.rf.gd/ajay_kumar_movie.pdf
    • http://jibovofafef.epizy.com/pathophysiology_of_cerebellar_ataxia.pdf
    • http://ribizotujigotok.rf.gd/crib_sheet_dimensions.pdf
    • http://sisadeb.rf.gd/handover_report_mail.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_off0000f752.bin
67a9366f916f5885f2b5fe38d66534439d420431c88dc6c0b1c046ff6389acf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF752 5056 bytes
font_01_sfnt_off00010886.bin
9b4f8c0531bf1dbad33cb9424e7d6759e47e403508d126103d08ba4e6015a9cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10886 10324 bytes

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