Malicious PDF — malware analysis report

Static analysis result for SHA-256 34cd1635198c4b2a…

MALICIOUS

PDF

123.6 KB Created: 2021-07-13 09:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c8b7bbc3e070af300fdd8c9778d6d26b SHA-1: bfb39a32250426c538d13e308ab5d561302bd802 SHA-256: 34cd1635198c4b2a706658dc6e02269f39ccfa0f2c9c58514970a5571adccfa2
66 Risk Score

Malware Insights

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

The file was detected by ClamAV as a phishing trojan, indicating malicious intent. It contains embedded URLs that likely serve as lures or redirect to malicious sites. The PDF structure and embedded objects suggest it's designed to exploit vulnerabilities or trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4686

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/sq/ugae/~3/5Aj-mlxkUx8/square?utm_term=design+the+packaging+of+your+product+following+the+guidelines+in+designing+packaging
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec9c269cb57f380a79d934/1626119206729/air_force_gd_topic_2020.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8d6fee2705b436309ba28/1625872126816/22679802565.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7a13d1d61f435cef4bb3b/1625792830092/watch_notebook_bollywood.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e91f080a287971af99e14d/1625890569041/3705948351.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_off00017f6e.bin
e5d0be04f6da9d6cd4de19edeba6cb24c526a1bec5bc0bf0cab9225ad08e6865		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17F6E 11292 bytes
font_01_sfnt_off000199ce.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x199CE 16792 bytes
font_02_sfnt_off0001b1e0.bin
a8cbe2d05c9bc58469c911ffdee5a6c2072b2c2c2bef17fdfc19f8b9d54ec9c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B1E0 18364 bytes

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