Malicious PDF — malware analysis report

Static analysis result for SHA-256 18e8042111ddf056…

MALICIOUS

PDF

65.6 KB Created: 2020-12-07 15:29:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: de2134070245818171208d10ff2f670f SHA-1: b1fa60139a4391f92e9be4b6adf890bf213edf18 SHA-256: 18e8042111ddf056a9916bafaeee5c3baa5925a2f3998dee614c0425fbf20d4a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that points to a suspicious domain, identified by heuristics as potentially malicious and flagged by ClamAV. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to 'Xvart baldur's gate' and application metadata, suggesting a lure to attract users to the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://trafficel.ru/strik?utm_term=xvart+baldur%2527s+gate PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465548/normal_5fb6d96b2e132.pdfIn PDF document text
    • https://felekiki.weebly.com/uploads/1/3/4/6/134689652/d633eb52eafe4e.pdfIn PDF document text
    • https://riwobasafogad.weebly.com/uploads/1/3/3/9/133999818/bb3e87e5371.pdfIn PDF document text
    • https://taxajoberaruvu.weebly.com/uploads/1/3/4/3/134320235/vobitopirefikekopug.pdfIn PDF document text
    • https://mafobosapufi.weebly.com/uploads/1/3/4/5/134505980/vanasivo_jitexoxozoriwa_gevirajifuxuj.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/5fc289bc24b06a7eb309ae07/t/5fc39680f3de5e49b5d2a372/1606653569299/11348290441.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/classic_mapquest.com_driving_directions.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc283f51c8c7413143c2872/t/5fcaeda011c29807e6cf3d98/1607134624457/dinojaritamudagofe.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/51604457851.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/jajidimole.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc586ba2bbd74065825e57e/t/5fc9d9fc52b5874c8592bcac/1607064062845/paint_perfect_3d_roll_turn_games.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3FC 5204 bytes
SHA-256: cb09adfe0d45fb5010c76581746d257807c1b1e030deb7eef05cd2c09411fa33
font_01_sfnt_off0000d5c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C2 11260 bytes
SHA-256: f0c1f97f1bc5b730b4e36a524d71fe527fd2cdc61eb1e85cb7d5658a8a6c866f