Malicious PDF — malware analysis report

Static analysis result for SHA-256 f191b41080a8a4ed…

MALICIOUS

PDF

68.3 KB Created: 2020-12-29 13:39:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ab103c675c2f1c407a55d9ccb361b933 SHA-1: a17b37cac5d961a4db3021f35858014e2532f8de SHA-256: f191b41080a8a4edcde9a59f1887d8c9818063086f4a89e4bf864071f1a7c363
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://trafffi.ru/123?utm_term=himno+a+morazan+con+letra PDF link annotation
    • https://minaraxu.weebly.com/uploads/1/3/4/7/134765114/1e2a1f015ecc391.pdfIn PDF document text
    • https://xikalevu.weebly.com/uploads/1/3/4/3/134319979/0a46600489240.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488336/normal_5fd6233ed4d6d.pdfIn PDF document text
    • https://jesebumu.weebly.com/uploads/1/3/4/6/134617302/sesoko.pdfIn PDF document text
    • https://papilezuserif.weebly.com/uploads/1/3/4/4/134437149/513228.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/WLRuWnh/international_business_times_sg.pdfIn PDF document text
    • https://jelonuzekuxenu.weebly.com/uploads/1/3/2/8/132814084/6121928.pdfIn PDF document text
    • https://masugofesobix.weebly.com/uploads/1/3/4/6/134656422/54758.pdfIn PDF document text
    • https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/8521979.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD83 4780 bytes
SHA-256: f8b5a42044564411e6418584ef7c886e84cb60e8c97faae9e318e77c749bca23
font_01_sfnt_off0000ddad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDAD 11516 bytes
SHA-256: b6a80c33cbff5e985790fd86564498dc27a9e8c4fcbe717c3694f02c0840f537

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