Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a0282ede07765ea…

MALICIOUS

PDF

72.4 KB Created: 2021-03-20 17:55:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 4ff9c40caa5bcb6ac1beecb7514f99af SHA-1: 40fcc10dc275076d4ad28cbed3f63ffb8b29e6d4 SHA-256: 2a0282ede07765ea35d1d6146580c7150bd8971624748df751c93e1d192b96d8
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV. It contains an embedded URI pointing to 'zajinet.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to a 'Mercedes benz e class 2020 manual pdf', indicating a social engineering attempt to trick the user into accessing the malicious link. No scripts were extracted, but the presence of embedded URLs and the high ML score strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/award?keyword=mercedes+benz+e+class+2020+manual+pdf PDF link annotation
    • http://ronifibofizet.medianewsonline.com/divopasub.pdfIn PDF document text
    • http://rofogukiluvupu.mygamesonline.org/44455833806.pdfIn PDF document text
    • http://taxurofetizi.22web.org/charlie_wilson_s_war_full_movie.pdfIn PDF document text
    • http://kulefinimujaleg.iblogger.org/salewojewalofode.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxiropuwomo/ga5fbih/lorupuxupufixakefujuze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471686/normal_5fe5e4c12c4a5.pdfIn PDF document text
    • http://gakagebir.mypressonline.com/reliability_data_analysis_with_excel_and_minitab_download.pdfIn PDF document text
    • https://cdn.sqhk.co/mivoteloxip/ptifggj/zetidaparof.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/Goge6ib/lean_bulk_workout_plan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462727/normal_5fcca6b3009cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/autocab_driver_companion_app.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/masoxikakudagufezovomeso.pdfIn PDF document text
    • http://ratobewiwigu.atwebpages.com/excel_vba_for_loop_continue.pdfIn PDF document text
    • http://laxukumelukadut.myartsonline.com/xutuf.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/94250918201.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/13563869762.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDE 5768 bytes
SHA-256: 949267df506c2eaa223b00e99f36ab64b71d9f28fb5c2f3a7d399732d0051819
font_01_sfnt_off0000ef7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7B 11152 bytes
SHA-256: 550e783e9f385c3c1ec6a8f7b4c2c1c4b9c3466c35f5aef4a2c05afcbd245ac0

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