Malicious PDF — malware analysis report

Static analysis result for SHA-256 566fd0d849d872f7…

MALICIOUS

PDF

81.3 KB Created: 2021-07-17 10:44:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 85086bdb3e1b5a8a08086f008ebb62eb SHA-1: c0e667bcd335c02d4ac3232689458fc619cdd7eb SHA-256: 566fd0d849d872f7bb69053a26ec2c37b27e65820c0bcb45d3bb920798d98239
66 Risk Score

Malware Insights

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

The ClamAV heuristic 'Pdf.Phishing.Trojan' strongly indicates malicious intent, likely for phishing or trojan delivery. The presence of embedded URLs, even if some are marked benign, suggests an attempt to redirect the user to malicious content. The PDF structure itself, along with the 'PDF_URI' and 'EMBEDDED_URL' heuristics, points towards an attack pattern involving exploitation of PDF vulnerabilities or social engineering via embedded links.

Machine Learning

  • Nyx PDF Classifier clean score 0.1467

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/~3/4Ji06Fp1PxY/square?utm_term=education+inspiration+thought+of+the+day
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edcab89779423221ddb617/1626196664303/10792976929.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ed8a0c39532c3941c21749/1626180109023/18_movies_online_for_free.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_off0000dbc9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC9 16792 bytes
font_01_sfnt_off0000f3e0.bin
5823c9e3f805705621f8130477103b7ce220b3df456683f15f4b8e72fa1215ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E0 11048 bytes
font_02_sfnt_off00010d61.bin
1f05a151d4522cfa8e51dd17782e11c69380327e7b7265eab268ba7c8eb4dc0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D61 17084 bytes

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