Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c37265387c3bd07…

MALICIOUS

PDF

85.0 KB Created: 2021-07-13 20:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 256029ae96095ab302fbf86df8a3c65c SHA-1: dc359cfecd7cdd1e8f51b9c14fbb7378e2c93955 SHA-256: 0c37265387c3bd0777a1283fae893170a2af4b7e00b2fb041801021c19ab09b4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated maliciousness. It contains an embedded URL pointing to 'https://oniceh.ru/square?utm_term=emmy+nominations+for+watchmen', which is likely a phishing or malicious site. The PDF structure itself contains embedded objects that could potentially be used to execute scripts, though no specific script content was directly extracted in this analysis.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6359

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://oniceh.ru/square?utm_term=emmy+nominations+for+watchmen
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8e126f229ba2ea833d572/1625874727112/what_are_the_data_processing_cycle.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edadd7c7772f26c8528982/1626189271627/who_are_the_strongest_angels.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec93ed7d354a5e86a4552c/1626117101703/49973503159.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_off0000ed23.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED23 16792 bytes
font_01_sfnt_off00010535.bin
874839329ebc07ce0862e7ea8919ee0fd4b724a66b42307394149b61b8f4223e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10535 16740 bytes
font_02_sfnt_off0001307d.bin
e1609ac04fa937e1908442556e0ed7d0fd311597f3964458bb53775f6a915544		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1307D 10736 bytes

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