Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c74ff4b496392bb…

MALICIOUS

PDF

81.9 KB Created: 2021-03-16 20:41:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c29684c96247262eb990cdd0b5aada8 SHA-1: 5aa2000b01e096249902f6adadea26a638d3bbdc SHA-256: 2c74ff4b496392bb5bc621c2f72fa9576bc8dcf5fc3dae30e9c60d15fff630f6
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'mezovuduw.ru/award', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'bushcraft kit list pdf'. No scripts were extracted, but the presence of external URIs and the overall detection profile indicate a malicious intent to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/award?keyword=bushcraft+kit+list+pdf
    • http://brosbass.com/583729420821hgoo.pdf
    • http://kajejib.medianewsonline.com/zitox.pdf
    • http://ledozikatiresev.scienceontheweb.net/konadinivogosezo.pdf
    • http://koteyarn.moscow/33807239243dugbo.pdf
    • http://nosinoski.shop/eat_me_io_mod_apkfe1mi.pdf
    • http://kixurox.getenjoyment.net/cells_and_its_functions.pdf
    • https://cdn.sqhk.co/nadetajagupe/ihCihV5/fonuzabupoxegifabetebarom.pdf
    • http://xuxikurov.mygamesonline.org/2015_jeep_grand_cherokee_service_4wd_system.pdf
    • http://instgrmmverifiedbadge.com/how_to_pair_bluetooth_to_jvc_kd-r320avjpk.pdf
    • http://janipuwibir.mywebcommunity.org/statistical_analysis_of_epidemiologic_data.pdf
    • http://fekosuse.getenjoyment.net/dulidinegidaxivivur.pdf
    • http://jotitojimo.mygamesonline.org/arizona_family_law_self_help_center.pdf
    • https://cdn.sqhk.co/soxesemu/gghDgeR/40307243546.pdf
    • https://cdn.sqhk.co/kubezuvare/LgiObhj/logo_quiz_minimalist_level_4_answers.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d3a8e649-16e3-4a09-b6c3-0e386fbab5e5/how_to_install_a_tankless_hot_water_heater.pdf
    • https://592908bf-dd96-48cc-88d9-ffebbdd10d84.filesusr.com/ugd/f34823_542a8284242543ad83b966e56307b2b8.pdf?index=true
    • https://167c8e7b-8160-49a2-a88e-f26749d647c8.filesusr.com/ugd/1ad47d_21f20104dc7e4af1a222b33d24474a28.pdf?index=true
    • http://solezod.myartsonline.com/effect_of_acid_rain_on_soil.pdf
    • https://af30af13-e0b7-4de0-aca7-7783c01eade2.filesusr.com/ugd/9757e7_c06da97ecf7b40baa16b5f3c84b2f56d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fde0a2d2-3dcb-4926-a6b9-2c4c274870bd/fishing_rigs_for_catfish.pdf
    • http://pogetowem.onlinewebshop.net/bmw_motorrad_navigator_6_manual.pdf
    • http://lejiletuvasipib.onlinewebshop.net/41071790246.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_off0001026a.bin
7b1f3b27cb9209cd5589a2ab4359ff3fb7a30f30b4f91d3d92627a92f50cd2c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1026A 5356 bytes
font_01_sfnt_off0001149c.bin
0bd8f5636e18b3d916b56c17f9787d147270e59e92e0aaac7ef83465b376dc36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1149C 11132 bytes

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