Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a74bf16a1e96e83…

MALICIOUS

PDF

70.4 KB Created: 2020-11-20 19:45:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3ef71049e9ed457489ad625459986c9 SHA-1: 18175d67c9728a46f4d341e8e51809f305451cac SHA-256: 9a74bf16a1e96e8351fb168ff46c79def321de84d129f57c146df6125a594c0f
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'traffset.ru', which is likely used to host a phishing page or download further malicious content. The document body, though heavily obfuscated, contains text related to a movie trailer, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffset.ru/123?utm_term=6+headed+shark+attack+trailer
    • https://cdn-cms.f-static.net/uploads/4369311/normal_5f88d2ea4f56c.pdf
    • https://cdn-cms.f-static.net/uploads/4475217/normal_5fa835ac10fe0.pdf
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/4657930.pdf
    • https://lowisaxov.weebly.com/uploads/1/3/4/3/134361609/3cc14ac49.pdf
    • https://cdn-cms.f-static.net/uploads/4377414/normal_5f8eb528baef9.pdf
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f9267b8b7b3e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bodajaku/75504850056.pdf
    • https://s3.amazonaws.com/juvetaso/92808100544.pdf
    • https://s3.amazonaws.com/baxekojojexusol/38015784040.pdf
    • https://s3.amazonaws.com/jevelel/chsl_2019_form_date.pdf
    • https://uploads.strikinglycdn.com/files/9c6cf1b6-613f-4285-8443-ec2d5e8fb24b/femul.pdf
    • https://s3.amazonaws.com/tevigotu/towozikenusuxil.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6b5.bin
1c6c7489df82518a9f72db952ae7a49cd996c3ed18f62c557dee80fe0b89fa28		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B5 5152 bytes
font_01_sfnt_off0000e82e.bin
eeec5a5ae58b039291c04ba186d033ef8bd592dc47e5b216ef7230dcc4ccc949		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE82E 10844 bytes

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