Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2a4aadf2452441…

MALICIOUS

PDF

80.8 KB Created: 2021-07-14 05:47:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9061d0613a67d8edad7913c1dca137c3 SHA-1: ad5caa9619c3ea898dedf9d08e8462a92686d260 SHA-256: bd2a4aadf2452441c54e5719f25e999e519993f38991ba7227bda956c49971d8
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected by ClamAV as Pdf.Phishing.Trojan, indicating a malicious intent. Heuristic analysis identified an external URI and embedded URLs within the PDF structure. The presence of these elements suggests the document is designed to lure the user into accessing malicious content or downloading further malware, likely through a phishing or social engineering pretext.

Machine Learning

  • Nyx PDF Classifier clean score 0.0894

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://feedproxy.google.com/~r/razvivatel/yapz/~3/IdU8rIDf9lQ/square?utm_term=what+does+stereotype+mean
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7e009a431ed42d2fc20b3/1625808905876/fafuzokitu.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec94587dc7460dd09c30d9/1626117208459/gogenejatuwazigofatimuza.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c44d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC44D 16792 bytes
font_01_sfnt_off0000dc64.bin
dcaa82b2a0cbfd57c2b42e8b6adb7b666dcea221ac4a6d35e6c3723089968401		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC64 10624 bytes
font_02_sfnt_off0000f48a.bin
8bfc5e2f6383778b4716e60c732a7e5228106b692ca52c1f6b3c0b2892049825		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF48A 16060 bytes
font_03_sfnt_off00010999.bin
408f540d03330a7c0d62411a58272ec71cdfae8c74d6f9b46d8510ef99ad104e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10999 17120 bytes

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