Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd05f20b882caa6f…

MALICIOUS

PDF

67.4 KB Created: 2020-11-19 06:32:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: b829aa460c1e3d712ec7fb29671c30d6 SHA-1: 5b6b6772e2b417a9c391a542e028995c7be79c67 SHA-256: bd05f20b882caa6f4881ee74aad786b10f5b46810718d14fde8cec650ee9b323
104 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. The embedded URL `https://traffset.ru/aws?utm_term=agreement+template+philippines` suggests a phishing attempt, likely disguised as an agreement template. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent, possibly involving embedded JavaScript for exploitation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://traffset.ru/aws?utm_term=agreement+template+philippines PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486537/normal_5fb3a4f45b788.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5f8f95300331d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392661/normal_5f9eb6f5ea87c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5fa560417ebdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417983/normal_5f9a0e0b37ace.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448542/normal_5f9f6614e3f28.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/fujadabez/17628642605.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/72333227634.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/124401403.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/wavodopilagaxisavuzo.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_off0000cc60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC60 5224 bytes
SHA-256: 02eb59aa2705a61067d207805eb824ec3d47072829747aabb96a313652a3df04
font_01_sfnt_off0000ddf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF8 10384 bytes
SHA-256: 899eeb1e55e8cb5ee26c74673aa659abed8467f80153dd2c11b27ce25d97b2e0

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