Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a85a09a2bcca029…

MALICIOUS

PDF

79.1 KB Created: 2021-03-19 20:06:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbb691a600cc604903a2563e738b4f7b SHA-1: 9308f156712e09c128e7dda32fd7f8635a739b54 SHA-256: 9a85a09a2bcca02922543616cf68fb272baea4e39efcb1ab74faa2819440c964
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that, when visited, likely leads to further malicious content or downloads. The document body, though heavily obfuscated, suggests a lure related to expense reimbursement policies, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://xezojetit.ru/123?utm_term=employee+expense+reimbursement+policy+template
    • https://cdn.sqhk.co/wabajevebe/gehhrWi/modern_warfare_cruise_missile_controls_inverted.pdf
    • https://cdn.sqhk.co/kajurineg/uVzhfHA/kannada_desha_bhakti_geethegalu.pdf
    • https://verijijul.weebly.com/uploads/1/3/4/8/134861220/6679428.pdf
    • http://kinorio5.xyz/saloxelonelmj4p.pdf
    • https://pelofaneb.weebly.com/uploads/1/3/4/2/134235527/1aa32.pdf
    • http://esmoney.site/how_to_evaluate_cultural_competencer3w91.pdf
    • http://didanak.22web.org/facebook_id_of_american_girl.pdf
    • http://mon-cmbretagne.com/fubetotove7wk1j.pdf
    • https://wabezapodila.weebly.com/uploads/1/3/1/4/131437306/jokaj.pdf
    • http://rostov-mobile-doctor.ru/wurojugexutanabefovegotozr5svc.pdf
    • https://cdn.sqhk.co/tamejenonisi/jgYP13F/wordscapes_level_8241.pdf
    • http://bixifofagowezi.22web.org/nonconformity_and_corrective_action_procedure.pdf
    • http://babblescoop.store/less_than_zero_full_movie_onlineqceb5.pdf
    • http://agencymedia-ig.com/crochet_pattern_for_bulky_yarn_afghaneqpfd.pdf
    • http://azakalaza5.xyz/viferironinutigetudp756b.pdf
    • https://donefuvo.weebly.com/uploads/1/3/1/1/131164418/89f82a1.pdf
    • http://workbykoder.xyz/dupamawefeuj979.pdf
    • https://cdn.sqhk.co/giganopof/dtjcmuy/76865256731.pdf
    • https://biwusudixibel.weebly.com/uploads/1/3/3/9/133987636/kuvujulebod_tesopumugi_botiruveme_voliworafexum.pdf
    • http://azalea.store/lavegobolokilitaf8ilgn.pdf
    • http://xtw2.club/zamofomikasiwaxozasefoltj1.pdf
    • https://cdn.sqhk.co/mirusopujame/2iciijc/91748282703.pdf
    • http://tudetiva.iblogger.org/water_booster_pump.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://72b50e20-f79f-40ca-96b4-24bef83e308f.filesusr.com/ugd/1a1092_494ad848dbac4564ac26c8365ed43ac7.pdf?index=true
    • http://bigibejunewolov.rf.gd/zopetupoxusakegameluwuj.pdf
    • https://3d5b2cfc-74f5-4c02-8466-0d369b02955c.filesusr.com/ugd/69b86f_01a9fa3121104b49a236875d68ff7088.pdf?index=true
    • 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_off0000f6c8.bin
d54a32b9d310789fa66dd85d568b3c62bd03b71dfd6a4c915fb1bcd4e6837c21		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C8 5348 bytes
font_01_sfnt_off000108e7.bin
f5f2056f7cc8d4f5ebbe795ba8e38203db649a3ca4d0d6f050ab43fc074d361d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108E7 11032 bytes

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