Malicious PDF — malware analysis report

Static analysis result for SHA-256 e645c10851211d4c…

MALICIOUS

PDF

82.9 KB Created: 2021-04-09 01:42:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf70ae2fc2ce8c6cefb55709cb890951 SHA-1: d677ab27729dafec4a286733d5475fe7bc99eca3 SHA-256: e645c10851211d4cbcb68f5579e8139cc49f5a29dd6a7f32cd3832b901f06b55
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing content. The document body, though heavily obfuscated, appears to contain keywords related to a product, suggesting a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/strik?utm_term=kenmore+refrigerator+water+dispenser+actuator
    • https://cdn.sqhk.co/goluxewimabu/jbxcZEr/24107860759.pdf
    • https://cdn.sqhk.co/wepunajexiju/j6UjdQp/43156171165.pdf
    • https://cdn.sqhk.co/libuzewis/idPhhhj/rugby_world_cup_2019_winners_list.pdf
    • https://cdn.sqhk.co/derixosu/iap9NWn/pifokadek.pdf
    • https://cdn.sqhk.co/luwonowuwig/egciPn5/printable_clock_template_with_minutes.pdf
    • http://kowekigoduze.iblogger.org/microkorg_synthesizer_vocoder_manual.pdf
    • https://cdn.sqhk.co/zapiseniw/ijc4Qib/sonic_boom_games_to_play_for_free_online.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gefegasoro.epizy.com/55801787766.pdf
    • http://wojibejo.epizy.com/21514821063.pdf
    • http://fulariponazaget.epizy.com/nupabaduxipepamipajiv.pdf
    • http://fezizovotovinul.rf.gd/college_mathematics_journal.pdf
    • https://uploads.strikinglycdn.com/files/ca8b96bb-3942-4d53-840b-87e8cf36f2e9/monstrous_terror_meaning.pdf
    • https://uploads.strikinglycdn.com/files/316e7dcf-5038-442b-81b5-3d80a8ebe7a9/black_and_decker_battery_charger_bc2wbd_manual.pdf
    • https://uploads.strikinglycdn.com/files/051ad578-0854-4f81-bce6-4bb8fe2e893f/72407337824.pdf
    • https://uploads.strikinglycdn.com/files/56eb11f8-c7e9-4f23-94ac-22979269b33a/xbox_live_code_didnt_work.pdf
    • https://uploads.strikinglycdn.com/files/cafa2507-cafb-4316-8783-8ddfa20abf94/52184544531.pdf
    • http://wutireliwuz.epizy.com/how_you_interpret_the_bible.pdf
    • http://fokoxowikelejex.rf.gd/91044778392.pdf
    • https://uploads.strikinglycdn.com/files/88790320-73d0-4898-9dad-207a32beaf4e/how_to_do_a_factory_reset_on_acer_aspire_e15.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_off00010375.bin
e953b1b375bb07bfd19615b8c7046e063129dbc393a8a549dbe9184ec756324b
pdf-font-stream PDF embedded font (sfnt) at offset 0x10375 5504 bytes
font_01_sfnt_off0001163a.bin
2d46fe6b683d068b9b2202d85374df3d013a7ffeedec3d67e4081510a80b8523
pdf-font-stream PDF embedded font (sfnt) at offset 0x1163A 12012 bytes