Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2a063e5248c7bb…

MALICIOUS

PDF

78.4 KB Created: 2021-03-16 21:27:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8b78596448545488748dedf30eb548f SHA-1: 4e449eeb5e516b5ca54f9bfb10d59a6a7b0db72a SHA-256: 1e2a063e5248c7bb6cdee4601e5ede6dbe119a887f747f5630a673d2dec4b4fb
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, one of which is flagged as a potential phishing lure related to an award. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of numerous suspicious URLs suggests the document is designed to redirect users to malicious content, likely a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/award?keyword=the+chaos+theory+of+careers+pdf
    • http://dk-inc.xyz/99869681604d9qdh.pdf
    • http://vladmer.ru/is_season_3_of_attack_on_titan_the_last2fxdp.pdf
    • http://jobware.pro/3875839750497ru2.pdf
    • http://igcopyrightverify.com/visual_basic_tutorial_in_tamilg14k4.pdf
    • http://twoup-viktoria.online/anatomy_and_physiology_of_animal_cellzsrhc.pdf
    • http://detonic-de.website/stihl_011_avt_carburetor_rebuildwkm6a.pdf
    • http://pebifakonek.sportsontheweb.net/5772806354.pdf
    • https://debuvubuni.weebly.com/uploads/1/3/4/8/134846467/migogow.pdf
    • http://alexandreablog.com/mawevovixidotiretikawor9ditm.pdf
    • http://ooovseanalizi.ru/how_to_make_ninja_star_using_origami_papersiikg.pdf
    • http://pusatokolerax.mywebcommunity.org/wuvutik.pdf
    • http://fezelegafefuv.mywebcommunity.org/maketidetovawejusewev.pdf
    • http://afracheat8.xyz/komudekufegebajavetuujo8x.pdf
    • http://islta.fun/609957619888cq5j.pdf
    • https://jotukodapoze.weebly.com/uploads/1/3/4/6/134632246/zazumutix.pdf
    • http://richteam.site/80375986758upsym.pdf
    • http://mynasert.online/tofuzerupakukevh2p2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zesotat/26305412959.pdf
    • http://ligoroxenafof.atwebpages.com/xexojotuguk.pdf
    • https://s3.amazonaws.com/folexapurilowe/sisekasor.pdf
    • https://s3.amazonaws.com/nigimul/dufogojom.pdf
    • https://s3.amazonaws.com/fukepez/sodezomobewoburu.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_off0000f471.bin
a0bf3f1057fc2764bbd2e943ac0b310671343650e1960f149c68aef7cffe7a4e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF471 5260 bytes
font_01_sfnt_off00010659.bin
b52ffe0be67f850210248aa7306bf7c3f6371a91c40845055bd2f30703a5562f
pdf-font-stream PDF embedded font (sfnt) at offset 0x10659 11084 bytes