Malicious PDF — malware analysis report

Static analysis result for SHA-256 6225a8d66d881b91…

MALICIOUS

PDF

95.6 KB Created: 2021-02-18 12:06:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: b3e82096688d8210c45cf19dce6b8e3a SHA-1: 2b483d6dd47b5ad75427dbe4def11042cd4e4c01 SHA-256: 6225a8d66d881b91dd4e5890b8dd685da8ffe79ae17454ef45794ab435676fdf
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, indicating a high likelihood of malicious intent. The embedded URL `https://seumenha.ru/strik?utm_term=as+bill+sees+it+page+4` suggests a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of common techniques used to redirect users to malicious sites.

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://seumenha.ru/strik?utm_term=as+bill+sees+it+page+4 PDF link annotation
    • https://cdn.sqhk.co/lajoroteb/tvggg1r/mother_earth_news_garden_planner.pdfIn PDF document text
    • https://cdn.sqhk.co/budajawisore/exjhmhi/55922946758.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/1iiJTSL/girlfriend_mod_for_minecraft_pocket_edition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419623/normal_601df3eeb158f.pdfIn PDF document text
    • https://cdn.sqhk.co/tobowovum/gjfGhia/9484440373.pdfIn PDF document text
    • https://cdn.sqhk.co/kixarozikej/b0jUmge/mitokijo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379220/normal_5fda70b27cc4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494452/normal_5ff64faec997a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451760/normal_5fc85201149a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502698/normal_60121fe8014ff.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/gdrJher/98587153652.pdfIn PDF document text
    • http://in-step.shop/papi_gay_porn1czd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475204/normal_602654a83d318.pdfIn PDF document text
    • https://cdn.sqhk.co/monubinejon/1xaKPje/piano_challenge_magic_tiles_games_app_store.pdfIn PDF document text
    • https://cdn.sqhk.co/muzorefu/TsNhhig/d_j_music_appliances.pdfIn PDF document text
    • http://argo-tourism.com/vanawaxoztdk0t.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/wizomoravazub/abc_tamil_movie_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/gudivada_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/reformas_borbonicas_lugar_fecha_causas_consecuencias.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_off00013bb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BB9 5108 bytes
SHA-256: 60e1ccd1a14996dddb5e25f1d64e1329815b0173a7184772084b1ac0efcf890d
font_01_sfnt_off00014d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D36 10600 bytes
SHA-256: ff70baba39c20c59194f53502fec5ad979ae337d539d46a40ace1278d643ad9e

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