Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae09ccc074fcdcbd…

MALICIOUS

PDF

77.6 KB Created: 2021-07-17 09:05:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5d0bcda4809e889d4249dd19cf6233a5 SHA-1: 9d962c0620082915164146c9058ab50babddb52a SHA-256: ae09ccc074fcdcbdb2865bf1b02b62f5284db55ad2237ce8fa909f92e0da44fa
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests the document is part of a phishing or malware distribution scheme. The wkhtmltopdf authoring application and the obfuscated document body are common characteristics of malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

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/~3/4aHNpQc2m6I/square?utm_term=matrices+with+same+eigenvalues
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee357bc27d1e40a549a7d7/1626223995527/21479534965.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec73354c0b954f9ea29550/1626108725324/dawerid.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f2345525edf123064f05a3/1626485845409/protection_from_eviction_act.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f0be5a347a2e2c84f993a0/1626390106997/35977531147.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f2013425d89e3fcfa8a461/1626472756739/zuzufimagolulatugoviwaz.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_off0000c7d8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D8 16792 bytes
font_01_sfnt_off0000dfea.bin
1ac1a15cdf6d45c667e2327f1e4c6a1ce6b3bc613d04d520a7eb802fefbfa6da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEA 18028 bytes
font_02_sfnt_off00011002.bin
cf3cfc070e20b30dc5d7caa03929df055b99c7b0b17dce570dcf1363a3d730a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11002 10804 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.