Malicious PDF — malware analysis report

Static analysis result for SHA-256 41afb97793502925…

MALICIOUS

PDF

81.4 KB Created: 2021-03-18 01:21:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82fd38ea8941fa1fc32f2c41d3a29ab6 SHA-1: 56a77e5321febcce55d8a91a8efd47f9a42a56c9 SHA-256: 41afb977935029258de4e59d849f0e3e5a9c20c9a4ad9647b4033197ccdff9ca
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing page or download further malware. The document body, though heavily obfuscated, contains keywords related to the URI, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/wix?keyword=undercover+economist+strikes+back+pdf
    • http://lojapidabud.mypressonline.com/richard_rorty_achieving_our_country_summary.pdf
    • http://xijipeva.mypressonline.com/tajune.pdf
    • https://cdn.sqhk.co/navotezive/ulge2ie/ghouls_and_ghosts_mobile_apk.pdf
    • http://tesekal.mygamesonline.org/butterfly_house_plans.pdf
    • http://budokudepa.scienceontheweb.net/23325730795.pdf
    • https://cdn.sqhk.co/fuvebopeweb/PCTgehe/nedifutuwijikawirub.pdf
    • http://xegazinijitup.mywebcommunity.org/vibumep.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mutodavop.rf.gd/envato_free_templates_after_effects.pdf
    • https://s3.amazonaws.com/palikuvexake/english_grammar_tenses_stories_exercises_and_answers.pdf
    • https://19527f6f-7821-4b33-8e58-d909ab9a203f.filesusr.com/ugd/b18fc6_340eda76a6ef45f1894fc29dbf2a1706.pdf?index=true
    • http://zuxekesimulir.epizy.com/beauty_and_the_beast_piano_sheet.pdf
    • https://s3.amazonaws.com/sefiwegegagu/bomeparepexuzalusazo.pdf
    • http://modewomidoxiva.epizy.com/poritirot.pdf
    • http://gekaxerawuzizuj.epizy.com/62846108934.pdf
    • http://jeborawaleko.atwebpages.com/vsepr_molecular_geometry_worksheet_answers.pdf
    • http://doritiwenoxa.onlinewebshop.net/10872253315.pdf
    • http://weponigonimogo.myartsonline.com/manual_de_auditoria_ambiental_la_rovere.pdf
    • https://459fb65c-52af-4c88-885a-43a44fbeaf25.filesusr.com/ugd/6a7407_589f0b34dbb04f2fa626f982463e4996.pdf?index=true
    • https://s3.amazonaws.com/jupoti/bebipum.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_off0000ff76.bin
3ca387d27c682c17a71325ceba343801c24bcfba847fb32fa57cafe7f9bb1636		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF76 5524 bytes
font_01_sfnt_off00011233.bin
d2012ee29fa00d8d7893c78a9c41b94e298e66efbf259629eaf71253be989847		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11233 11184 bytes

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