Malicious PDF — malware analysis report

Static analysis result for SHA-256 43c4feec21cae5f3…

MALICIOUS

PDF

92.1 KB Created: 2021-04-01 07:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20bce78f065aef1c7176ba95a57b787e SHA-1: bdc906d40865d6561d1c700ad825758adb9d0bc1 SHA-256: 43c4feec21cae5f3b23a9d0fcc09fe579f8bf3ac25bcd3a4ee20d3e73aedeb9e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains keywords related to the embedded URL, suggesting a lure to a fake website.

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://seumenha.ru/wix?keyword=pokemon+emerald+water+pulse
    • http://tendernes.ru/56421903121bq49r.pdf
    • http://ver-alex.website/hangout_with_yoo_episode_64ej2fw.pdf
    • http://mutupezag.iblogger.org/kobijuzofo.pdf
    • http://converstarget.ru/business_administration_and_management_wiki97p5b.pdf
    • https://cdn.sqhk.co/seseniluvus/jak61Uf/a_counterclaim_is_raised_by_a_plaintiff.pdf
    • http://disconto50.info/motorola_xts_1500_parts_listbwrfd.pdf
    • http://irisca.online/lukupatunilakusebagodnz27.pdf
    • http://kersita.space/5166541738285ovm.pdf
    • https://cdn.sqhk.co/fixeruzef/wdPifwB/bujodegiseb.pdf
    • http://wuvilorilete.22web.org/60012800761.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jomerijokera.rf.gd/taroranov.pdf
    • https://5b3500e9-40b4-440a-9ada-171ed8bcf4c9.filesusr.com/ugd/7820d0_230b7345b96948c8b229f4625ef2acb6.pdf?index=true
    • https://fdb4f28e-c637-431f-967d-457feef73efb.filesusr.com/ugd/cf5aa9_09aa6494dad54471aa58e2c99e421e54.pdf?index=true
    • https://uploads.strikinglycdn.com/files/dc1dd160-e43e-48a3-b77b-ad3a5f894061/kukazufitizinudupojobipip.pdf
    • https://uploads.strikinglycdn.com/files/c7ee39f4-e7ae-4cf3-b06e-ac48e624bf60/2012_ezgo_rxv_service_manual.pdf
    • https://uploads.strikinglycdn.com/files/d543813f-d62f-4e2c-8822-7f25f18f16aa/vc_generator_2k16_no_surveyor.pdf
    • https://86908e24-11f3-43a1-9346-bf531f45ee0b.filesusr.com/ugd/97493d_a68e192f5cbf408c8a32a7e4e07839fe.pdf?index=true
    • https://1ceef7f3-d523-4f80-a0a4-3aed54d3d17a.filesusr.com/ugd/48841a_76b60dbc05d0457082339d014bd74c46.pdf?index=true
    • http://dexifuv.epizy.com/bissell_powerforce_compact_turbo_bagless_vacuum_cleaner_2690.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efb2.bin
342e291cce9967221aad356703c17d60b1d135ec2fa1e5fc56d66db355e18b9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB2 11668 bytes
font_01_sfnt_off0001160a.bin
e9fa5fd4ab616f90885cb607bb026a386d2a54ee01ac1dd2f5338414daf1f3fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1160A 5260 bytes
font_02_sfnt_off000127e9.bin
d1839f16d7d673390dd2020b0a1a31a853feb01c69b5cfe19ce68f96b379247c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127E9 11032 bytes
font_03_sfnt_off00014dd5.bin
ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14DD5 16092 bytes

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