Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed8d03acb16ae2b3…

MALICIOUS

PDF

69.4 KB Created: 2021-02-15 11:57:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 4a70aa88da0eaabd55738f96f66e9e42 SHA-1: f23b91c60b2c62705948add3cd1b16fe0a4b1575 SHA-256: ed8d03acb16ae2b38675e1c9c4e29e4bc4bf59dc7996911344a84c541828a516
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious. The presence of an external URI and the overall malicious classification strongly suggest a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/strik?utm_term=the+doll%2527s+house+short+story+symbolism PDF link annotation
    • https://cdn.sqhk.co/gubogezemazo/eytwCb1/60790818286.pdfIn PDF document text
    • https://cdn.sqhk.co/firataxoworo/jdgfRgg/bowling_guide_botw.pdfIn PDF document text
    • https://cdn.sqhk.co/vemetafije/jageRgf/racing_limits_unlimited_coin_mod_1._1._0.pdfIn PDF document text
    • https://cdn.sqhk.co/semoxumid/jfhdjcf/frightening_spectacle_meaning_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/LvBjfie/canzone_italiana_piu_famosa_nel_mondo.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/ovhgthe/maze_runner_books_ranked.pdfIn PDF document text
    • https://cdn.sqhk.co/kigowabalo/F8idChd/project_management_certificate_programs_online_canada.pdfIn PDF document text
    • http://strgb2.ru/73858952003v4bb.pdfIn PDF document text
    • https://cdn.sqhk.co/gebemiwisero/jaBjc5m/15087108397.pdfIn PDF document text
    • https://cdn.sqhk.co/pujazojiwixi/fzYvsvC/68589040651.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/pulavokaxe/police_report_writing_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/ausencia_de_cuerpo_calloso.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/37607439289.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_off0000d24a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24A 5080 bytes
SHA-256: d97ff67da090b17a370b9fae63aed2c65ca0ab01195a856ae535974ffc994214
font_01_sfnt_off0000e372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE372 10960 bytes
SHA-256: 2d0d2e2cccca11e7e2d590cd2dd1b902bcf32fe3a92e5d769569455f39060d9b