Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0e0b6873f524e0b…

MALICIOUS

PDF

69.2 KB Created: 2020-12-17 08:01:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 39753054129ee29d402830f5880f5771 SHA-1: 27b8ac560575fd8c6bd53d3dc3868b42ddb911c4 SHA-256: a0e0b6873f524e0b69a9b30a5872ec62ba72b5ed898d25559f9841131e16640b
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. Heuristics indicate the presence of external URIs and a ML classifier flagged it as malicious. ClamAV also detected it as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to reference product information, likely as a lure to encourage clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffine.ru/123?utm_term=ryobi+pressure+washer+2000+psi PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393370/normal_5fa553acb1045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423699/normal_5fbde4ad80937.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384149/normal_5fd79f79646fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373776/normal_5f92980deaff8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5fbed8163e350.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480173/normal_5fc7eb1cc4983.pdfIn PDF document text
    • https://norigawe.weebly.com/uploads/1/3/3/9/133988483/zumovorum_jobok.pdfIn PDF document text
    • https://kegazesawatodo.weebly.com/uploads/1/3/4/3/134378031/zivivizokopadan.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/5fc0052111f6a4198480c96b/t/5fc1f35be18c5c478e416ba1/1606546267359/summoners_war_channel_65.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79814100abc42af3e4ce9/t/5fcb7a21190ee82df8dd3ba4/1607170593800/93101923402.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/lhasa_apso_puppies_for_sale_in_minnesota.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/6211267500.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ed1560f2895dc1e7fe11/t/5fc1cd9764571256547f06eb/1606536599787/kopigoj.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_off0000d029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD029 5492 bytes
SHA-256: 6fe25a2fff2e2865a5aaf3c9a53e970417c9581e95beeb77ab03510cc97e01c8
font_01_sfnt_off0000e2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E7 11152 bytes
SHA-256: af92973685f24dafc06647bc5cd3f96667d2e323cbc24600b6d5b479a1ff0a11