Malicious PDF — malware analysis report

Static analysis result for SHA-256 178fe7adadebb613…

MALICIOUS

PDF

75.4 KB Created: 2021-07-21 01:34:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6f866972b2dc58063ec8ab7f84a86e44 SHA-1: 0ab8e163290d9dd97da80c49eda232328ec751b1 SHA-256: 178fe7adadebb613e9f7189dfdd62345ac34d987dc36bbb2a5573b7e35197fbb
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a phishing and trojan detection. It contains an embedded URL that, while currently flagged as benign, is likely intended to redirect the user to a malicious site. The PDF structure and embedded objects suggest it's designed to exploit vulnerabilities or trick users into visiting external resources.

Machine Learning

  • Nyx PDF Classifier clean score 0.1751

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/~3/7R6buoffwiA/square?utm_term=face+unlock+without+swipe+android
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8f6d42210ba6bce106bbb/1625880276619/butterfly_song_download_mp4.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_off0000c484.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC484 16792 bytes
font_01_sfnt_off0000dc96.bin
648acabd3ab0e784af90b9ef1de5bc0587c71bb54e087434e89f4c62529958a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC96 17052 bytes
font_02_sfnt_off00010935.bin
ee7168d901d225b91ddaf77b81bc8f88b705f923302cc788391ebd8ba4c1d879		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10935 10864 bytes

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