Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7e194ef7d24290e…

MALICIOUS

PDF

75.9 KB Created: 2021-07-13 16:17:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ffb8b0a7cb689e627dce8c1aabeca02b SHA-1: a8c85f078d9d72a872f1783f8de5d767a460888d SHA-256: b7e194ef7d24290e33b201095338fa80ba715a553fabaa880326caad60b88a4f
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a signature indicating phishing and trojan activity. It contains embedded URLs, one of which is flagged as suspicious, suggesting an attempt to redirect the user to a malicious site. Although no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a phishing lure.

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/v-xubMviL4Y/square?utm_term=home+in+escrow+meaning
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e86507062e44289f3d50be/1625842951105/my_peripheral_vision_is_wavy.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_off0000cae6.bin
fafec49e2ad688cdf637d802e54e6c5f844296a31ae1b76b655ba99c3b669b69		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE6 15612 bytes
font_01_sfnt_off0000f2a6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A6 16792 bytes
font_02_sfnt_off00010abd.bin
673bb1e45d9224c722fddab421ffd8d91ab49c6e9bd7c2dc64b164ff64764fe5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABD 10508 bytes

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