Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb823b85bd2449d2…

MALICIOUS

PDF

73.6 KB Created: 2021-07-15 23:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1074cf22cff0a7a330b4a0a1329557b4 SHA-1: fa7c06da02c72957818b20b8026029ecc5ffe21d SHA-256: eb823b85bd2449d2be13ec16b6f9ca7473d23738599042cd4d0f421ae3d77b55
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The presence of this external link suggests an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. No scripts were extracted, but the embedded URI is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.1321

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://smidgel.ru/square?utm_term=t4+fillable+2019
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e884782696f90b69f29a2e/1625851000674/13448325124.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f064e06a22b22fd8a31042/1626367200248/59104661034.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_off0000bd51.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD51 16792 bytes
font_01_sfnt_off0000d568.bin
de11aa45f0a52d4c6f22d98abd98e23c6bf6b225d702deca4a0c1e5e93a0050c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD568 10260 bytes
font_02_sfnt_off0000eca1.bin
9c3c50ca7885eb1b87261f6f74ba185aca171ae216209544253fbc3ee3acc073		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECA1 1720 bytes
font_03_sfnt_off0000f4c3.bin
1f29e337a5f03160511276bfecba2ce40d33f21d9b1db013ce9d71fcc775898b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C3 15012 bytes

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