Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a91ade01d7897a…

MALICIOUS

PDF

72.1 KB Created: 2021-03-10 04:11:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: e59be013ef1e3347c86ad37d0893fb34 SHA-1: 48f637360bdca1384a1165f5ee4e81ec8a81def3 SHA-256: 47a91ade01d7897a8fbca81c44329db7c366ca529308d395360ed2ef8e713bcc
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to 'https://mezovuduw.ru/123?utm_term=proxy+for+brutesploit', which is highly suspicious and likely serves as the primary lure. The document body, though heavily obfuscated, suggests a pretext related to 'proxy for brutesploit'.

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://mezovuduw.ru/123?utm_term=proxy+for+brutesploit PDF link annotation
    • http://buloshnaya.site/fulujenafoxili0dqxr.pdfIn PDF document text
    • http://ewwe.space/comfortmaker_rpj_ii_owners_manualtin1x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425501/normal_5ffcb57818e31.pdfIn PDF document text
    • https://cdn.sqhk.co/muxaferamet/bEgjage/41930402562.pdfIn PDF document text
    • http://blancop.xyz/deloralefokuv9jqep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481408/normal_5ffa9a2c4149e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387219/normal_60154f938e27f.pdfIn PDF document text
    • https://cdn.sqhk.co/zirigajer/JgiigeZ/marco_polo_world_school_app.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/migivewuwe/86594397621.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/jumefalekuponaxogax.pdfIn PDF document text
    • http://xawezukazekexi.epizy.com/dodejegolatubapi.pdfIn PDF document text
    • http://vowafixugologu.epizy.com/pathfinder_campaign_setting_aquatic_adventures.pdfIn PDF document text
    • http://wivufakumetewiv.rf.gd/porovinujufebomewilepa.pdfIn PDF document text
    • http://vitupofelomar.epizy.com/kuwogexawimopaxunaxifibik.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/genetics_in_medicine_thompson.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/jorigotuwudanuv.pdfIn PDF document text
    • http://zigonetisakep.epizy.com/site_reliability_engineering_workbook.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/abbyy_finereader_9._0_software_free.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_off0000dfa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA7 4996 bytes
SHA-256: 47b09b5860ab771d7ab827861b02ace84cfe48c318ff1f64eeea54b2a9014982
font_01_sfnt_off0000f0c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C6 10192 bytes
SHA-256: 0ffd64cb447c9168a17368f6f43354d06008dd05a980f711ef4c304d9b60fb0e

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