Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67baff0c0d65bbc…

MALICIOUS

PDF

82.6 KB Created: 2021-07-13 20:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4742da6764185848da48c25d4d5b6274 SHA-1: b45fb4ecf75add1b3033d12d1a80aac2a6d80d8f SHA-256: e67baff0c0d65bbc21a261cb2c182f30fa82a396fac6ac7d46889907b20ab69a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, which is a common tactic for phishing or distributing further malware. The PDF structure and embedded artifacts suggest it is designed to exploit vulnerabilities or trick users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9627

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://drafthe.ru/square?utm_term=rules+of+survival+unlimited+money
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec7af1154eb17b68491c71/1626110705898/49403137774.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8f907dc7460dd09bb58d/1626115985103/7th_standard_computer_science_book.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ed0bfd4bcdcf6393f9ae45/1626147837835/bugagitubivuwavadog.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e80e431873c46ac93ba594/1625820739515/deber.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e832034b964f05b84b8f85/1625829891725/nanegiberobinomopexavuk.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8bdf337c4677c346152ac/1625865715388/more_than_one_isa.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec996c934d360eb28a4990/1626118508661/tefasilezalodizufano.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e82ba357d2352c927fad71/1625828259537/23918379557.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e09b.bin
e6e803b1f6e98b25715d919ce6ff9d0297c5da1aa892eba722e7b2b97d1c9d5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE09B 10840 bytes
font_01_sfnt_off0000f9a9.bin
2db38cfda404498ed9684e114a5cabd2d1ba59d15fc1730324a77558cb451f24		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A9 17148 bytes
font_02_sfnt_off00012649.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12649 16792 bytes

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