Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde57fa00b9e7cc9…

MALICIOUS

PDF

67.0 KB Created: 2021-01-06 05:46:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 815346ba02299311b6c790d9e900c21a SHA-1: 5616c6221792e6d27ed3ad4ed32b4c691170d173 SHA-256: bde57fa00b9e7cc9a4b726eb4cf367cd7b645e14eaf9b52c1290926fd039015a
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 contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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/aws?utm_term=latest+arab+songs+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481673/normal_5fbf5f156756d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486033/normal_5fb3fe52976ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387218/normal_5fa354fa5341e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366952/normal_5ff1f1176a7ac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379384/normal_5fe2dc191a66a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480750/normal_5fd1b7d74001b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409258/normal_5fb2cdee11e27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490127/normal_5fe6c33a21117.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464878/normal_5fd2a2c7983d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419818/normal_5fe07a112e5ee.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/rekawexuretowo/phas_o_medical_terminology.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/doraemon_story_of_seasons_beginner_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/bhagavad_gita_free_download_in_marathi.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_off0000cc42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC42 4984 bytes
SHA-256: 3fe0c3be86253efd80763983a9a354f8b410315addc1fb402b41b6c64d39c0d1
font_01_sfnt_off0000dd4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4D 10116 bytes
SHA-256: 59c24592a12cf32733acfe88eb704a07281b0642c21acd60ab824d6c6e932d1b