Malicious PDF — malware analysis report

Static analysis result for SHA-256 97f08903ecc448d4…

MALICIOUS

PDF

66.4 KB Created: 2020-12-18 19:05:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 897abe2eede2c7043ee590bd5e4623da SHA-1: d7e9cf582da37b87b12f977dda7e1423ba2c9eb7 SHA-256: 97f08903ecc448d44ab66bb3560d4533d42ff8ef7046b2cf506230ecda670e7e
136 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it's a PDF with an embedded URI. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic strongly suggests the document's purpose is to trick users into believing they need a password for an archive, a common tactic to bypass gateway security. The embedded URL points to a domain associated with potential phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://traffine.ru/123?utm_term=irritrol+rain+dial+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453890/normal_5fa9731656ca9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368976/normal_5fc8853ee0099.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488580/normal_5fbcb2a5e429e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc1cfa22cf09257bd7273ee/t/5fc4aab63c6ccf69f3f2e0f1/1606724278628/36812323793.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/vizinadete.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc280b3405d5340f333d31f/t/5fd005aa7b0a801071fc5582/1607468459874/the_light_between_oceans_full_movie_free_online.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/commandos_destination_berlin_full_game_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2ca3a3dfdd95b60e15de0/t/5fc52f51e18c5c478ea29060/1606758226702/52898655546.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfb34cb3e0f5771149021/1606286133194/6177996247.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_off0000c577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC577 4728 bytes
SHA-256: 88e053c49063d2d640816628b5e713294b90f2ef450571f3fb90b02ea3fadf2e
font_01_sfnt_off0000d56c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD56C 11824 bytes
SHA-256: f967157c37b25eca4488f6f56f3febd5dbd0196434bd6642a6813f41e082ce0d