Malicious PDF — malware analysis report

Static analysis result for SHA-256 366935aa031773f6…

MALICIOUS

PDF

64.9 KB Created: 2020-12-31 19:35:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4ba1a3cb15d84f32d621fbdffa521328 SHA-1: 155532b9ea4139b7a5b3388ff2fe2ae8f268d82f SHA-256: 366935aa031773f67e7f55971a8b4c9671670903903371c2b606c9f59f9b8238
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffnew.ru/123?utm_term=blackweb+wide+angle+dash+cam+manual PDF link annotation
    • https://cdn.sqhk.co/kanedufopuma/iipjfje/zombie_2019_heroine_name.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/a9midDi/xozixitipidomusojot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401983/normal_5fb25d34600e1.pdfIn PDF document text
    • https://cdn.sqhk.co/pujapipiwat/clgc5jj/2048_unblocked_abcya.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375339/normal_5fd67da1455f0.pdfIn PDF document text
    • https://ribosotegolexo.weebly.com/uploads/1/3/4/0/134013239/6197472.pdfIn PDF document text
    • https://vapaniwagivu.weebly.com/uploads/1/3/4/4/134442769/sabemawejofuja_detidugag.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/risisipajole/pertussis_booster_adults_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/cellular_respiration_peas_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/53109619402.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/briggs_and_stratton_2200_pressure_washer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/kewoduxotabudo.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_off0000b1dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1DC 5296 bytes
SHA-256: eae1df7e2c278fb02630ad1aa4a6f985f1b5b24142d4607188be0f3b22f5a15e
font_01_sfnt_off0000c3b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B8 11000 bytes
SHA-256: c588cd7d9a1a6bdf889d99323f301fd9a777916ba033b1757a963ceaadf1c407
font_02_sfnt_off0000e8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f