Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1388795367d5517…

MALICIOUS

PDF

73.0 KB Created: 2021-07-14 04:45:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ac29c560c34a69a395f92534fc7caf82 SHA-1: eb1925cd194c252303b70b6dee5cbbba68138710 SHA-256: a1388795367d5517c34d1bfb42ba61bd67d5444533c6edeaff7dab271321e00a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojanized PDF. The presence of embedded URLs, though marked as benign, suggests an attempt to redirect the user. The PDF structure and embedded objects are consistent with malicious document delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6882

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/hIkXU_AiHkM/square?utm_term=shaddai+name+meaning
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e9598537cb904475619f99/1625905541650/what_does_it_mean_to_be_coined.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e83628bab06216133c1519/1625830952275/royal_family_dance_all_you_ladies_pop.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8763e6a94223581c0318a/1625847358298/ketajanenom.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_off0000bfb9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFB9 16792 bytes
font_01_sfnt_off0000d7d0.bin
848b9ca8be5836186cb73968762b7b4a6669cc1a51ea914c5fcf6504d69c8209		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D0 10236 bytes
font_02_sfnt_off0000ee52.bin
fbebbf455119326508929adeb2a39311673157997b8e1e91ae6ccac73a1f3007		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE52 16384 bytes

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