Malicious PDF — malware analysis report

Static analysis result for SHA-256 68f818c52c1f8009…

MALICIOUS

PDF

79.7 KB Created: 2021-04-08 21:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2c10f331feb424ba4cda3c512e98d54d SHA-1: 462794a81a1277fcc108b2432aea0cad2a510443 SHA-256: 68f818c52c1f8009fbd02eef4d330b6ec5b022f69cb3b822d65b95b1409849e0
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL, https://vilenefex.ru/strik?utm_term=reset+roku+3+without+remote, likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to account recovery or password reset, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/strik?utm_term=reset+roku+3+without+remote PDF link annotation
    • https://cdn.sqhk.co/wotirixa/b0ljjid/zombie_frontier_1_mod_apk_revdl.pdfIn PDF document text
    • https://cdn.sqhk.co/vadezewe/Yjcjajc/jexenemozonatoburubolax.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/gg9hiIN/37646354368.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/ihfnghx/dapenibaxijezurele.pdfIn PDF document text
    • https://cdn.sqhk.co/rasidepad/hhojgdf/23570979577.pdfIn PDF document text
    • https://cdn.sqhk.co/wovupeni/HjgwsVh/64591225832.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c01188fd-d8af-4b86-846b-090f7ecd58d8.filesusr.com/ugd/9058e5_f819b0168d16481c834d5cdd65384d9d.pdf?index=trueIn PDF document text
    • https://def05634-b969-4265-beeb-1e7d695e9a44.filesusr.com/ugd/6865ce_675f032b372c4e77a066e1b9dc8cb691.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2440eb4-3f3d-4293-b93d-6e5da18f89b0/wimubujexisukubotodij.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/72630878475.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d6ea8f6-7b63-4e9f-a8d5-dbab8ff35d85/12158917749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e44f70b-76ed-46e8-9b7e-2e713bf562ef/pulasomizetalon.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/sketchup_shortcut_key_for_pan.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/aladdin_game_for_laptop.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/wavujeluzowat.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/86094656608.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76ed6039-bef6-4df4-b29c-877ed75140c4/13604024504.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_off0000f936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF936 5008 bytes
SHA-256: fa6b287672aa824a957392bea7903c01c114f4ee8cb3bb4ceea93ab2b8f6ac43
font_01_sfnt_off00010a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A33 11780 bytes
SHA-256: 685bdb584feae2c9c4ad93366cf9f888d582a2925d12ccd2d33d650a55c813b4

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