Malicious PDF — malware analysis report

Static analysis result for SHA-256 e44fead0590bf5d8…

MALICIOUS

PDF

99.6 KB Created: 2021-02-20 23:12:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0148093b8fd662a19327ce7a3e5358b1 SHA-1: 34227b7be0f63a1b85dfdc1b1cb13cdccfa50798 SHA-256: e44fead0590bf5d8b887f567e189e5a1a6d24947c3f84e478f0d46398d5c618d
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=how+to+play+24+hole+harmonica+for+beginners In PDF document text
    • http://tryraisins.pro/vomopezugobibavemokuk2yss.pdfIn PDF document text
    • https://vukojudal.weebly.com/uploads/1/3/5/3/135317211/5817825.pdfIn PDF document text
    • https://cdn.sqhk.co/mugolino/Egi8ggQ/saruxobidepi.pdfIn PDF document text
    • http://lnstagramcentre.net/swing_low_sweet_chariot_choir_sheet_musicy3wux.pdfIn PDF document text
    • https://cdn.sqhk.co/fiziroluj/jfVjaW7/jugar_piano_tiles_3_online.pdfIn PDF document text
    • http://wiinorama.website/object_shredder_booyah_bombxdzlk.pdfIn PDF document text
    • https://vafabifagid.weebly.com/uploads/1/3/4/5/134583570/644821.pdfIn PDF document text
    • http://vseti.life/20717430828xthyb.pdfIn PDF document text
    • http://tricitysikhs.com/how_to_open_sansui_tv_without_remotediu39.pdfIn PDF document text
    • http://thesalle.xyz/83469510013q6yac.pdfIn PDF document text
    • https://fosozofafeg.weebly.com/uploads/1/3/1/8/131856121/jadez.pdfIn PDF document text
    • https://xukotonaxi.weebly.com/uploads/1/3/1/4/131453431/pinixatovixe.pdfIn PDF document text
    • http://vobasexukux.iblogger.org/bagunukijozex.pdfIn PDF document text
    • https://cdn.sqhk.co/gexedamej/NhLXgfC/kujibukanatupunosovunafav.pdfIn PDF document text
    • http://doctora.club/orexigenic_peptides_arcuate_nucleuspo4nz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/6052232787.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/pexevolajamebog.pdfIn PDF document text
    • http://bikaxubu.rf.gd/xasepesasetogepufako.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/arcgis_network_analyst_extension.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/vanivaj.pdfIn PDF document text
    • http://vimabamavarona.epizy.com/xerome.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13864 5732 bytes
SHA-256: 331a5f386dab0eea66ea0e53235def761f82baaae2ebcac522aad07d65b7d13e
font_01_sfnt_off00014bd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BD2 11496 bytes
SHA-256: 692a86ca74bc8acf908644b3cb99611690d7009744fad9bde8ffa49a1e6a9746
font_02_sfnt_off0001725d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1725D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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