Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee235ba1aa1aa24…

MALICIOUS

PDF

75.3 KB Created: 2021-03-28 20:04:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc0b679f743742b589e62628cadd6df0 SHA-1: 7b1bb5a6a5a416c112d8a8792603ced65bfd66ad SHA-256: cee235ba1aa1aa24dce97b9b8a296ff0525220f17edf885a6c2751f20a8f392e
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an external URI pointing to 'fokemale.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and the presence of external URLs suggest an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://fokemale.ru/123?utm_term=mcgraw+hill+glencoe+algebra+2+answers
    • https://cdn-cms.f-static.net/uploads/4489979/normal_604b7fb32f807.pdf
    • https://cdn-cms.f-static.net/uploads/4384472/normal_603a220546d22.pdf
    • https://gorejirulikem.weebly.com/uploads/1/3/4/7/134738880/fojujabapubu.pdf
    • https://cdn.sqhk.co/fuxuduxexi/dxcWiam/90s_pop_stars_female_costumes.pdf
    • http://jufanurozud.getenjoyment.net/70373665757.pdf
    • https://vofaxarexokuj.weebly.com/uploads/1/3/4/7/134762848/789.pdf
    • https://jivetigaforivuj.weebly.com/uploads/1/3/4/3/134350389/vitupanivi_nanusatabefalo_felamufup_vasanasinuvere.pdf
    • https://piwusobalusuwav.weebly.com/uploads/1/3/2/3/132303181/88fc15572.pdf
    • https://cdn-cms.f-static.net/uploads/4451970/normal_602f5fac28335.pdf
    • https://static.s123-cdn-static.com/uploads/4471109/normal_5ff3838f95e74.pdf
    • https://timakopazasiri.weebly.com/uploads/1/3/4/4/134445807/275003.pdf
    • https://xanowiporak.weebly.com/uploads/1/3/0/8/130814060/ccf5c798801c6.pdf
    • https://cdn.sqhk.co/mekurapiw/Hih9gg3/marketplace_insurance_2019_login.pdf
    • https://cdn.sqhk.co/mizipudi/cMiahjf/love_test_app_online.pdf
    • https://kixivoveluvib.weebly.com/uploads/1/3/0/7/130775150/fopigolefapox-radokuwab.pdf
    • http://devigebogubiret.getenjoyment.net/batteries_and_supercapacitors.pdf
    • https://static.s123-cdn-static.com/uploads/4466398/normal_6001906d1e485.pdf
    • https://xexonuza.weebly.com/uploads/1/3/4/3/134305788/612077f4ec.pdf
    • https://cdn.sqhk.co/toriwogadej/jcgjgiY/nuance_dragon_medical_templates.pdf
    • https://cdn.sqhk.co/nujudemugipi/hh9HKid/34205624381.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/viromibukoleliw/amide_formation_from_acid_chloride.pdf
    • https://s3.amazonaws.com/donukadizolin/youcam_perfect_camera_free.pdf
    • http://lojubefogugiku.onlinewebshop.net/hernia_abdominal_pediatria.pdf
    • https://s3.amazonaws.com/titugome/vepagikezaxuzus.pdf
    • https://s3.amazonaws.com/bulujono/losalugonevudini.pdf
    • https://s3.amazonaws.com/jupevuxirapi/blinded_by_your_grace_choir_sheet_music.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_off0000e7de.bin
7db0a8a9e784347a64fefce59d9fb3510d1184069d962d66ed0b3d692fdc4ed6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7DE 5432 bytes
font_01_sfnt_off0000fa70.bin
f69b3256b9a28ee103ebb0c7c2ddb026a8a6df59f912346a70237f5391f3a7cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA70 11084 bytes

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