Malicious PDF — malware analysis report

Static analysis result for SHA-256 13471a8d07ecf824…

MALICIOUS

PDF

101.7 KB Created: 2021-07-12 22:15:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c21ed2e30ed2bf5f0bbb4b76c1e926dd SHA-1: 74a5f1bfc831f06c5deda20d530efc44600111a1 SHA-256: 13471a8d07ecf824e14e725bd30bfb0bc6212e32ae54dfbe5f12b876d270c74c
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a Pdf.Phishing.Trojan detection. It contains an embedded URL that, while currently flagged as benign, is indicative of a phishing attempt. The PDF structure itself is also noted for having duplicate object bodies, which can be used to obfuscate malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.1120

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/sq/ugae/~3/W5vEtEh6t-A/square?utm_term=king%27s+shilling+meaning
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7ba6580504e0a7767a3b3/1625799269107/whats_the_chances_of_getting_pregnant.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e77f15f1dc1e76d0a9d79c/1625784085173/62498114560.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_off000134f6.bin
bfbc7e5eef5439af4e6bd2ac4329388627c80197c8ddc35bfea8c35be5243bdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134F6 10260 bytes
font_01_sfnt_off00014bc2.bin
4c5cc711e9009edbd69115391196c28028ab11a56a26d2d4e901666e50afc925		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14BC2 15088 bytes
font_02_sfnt_off00017195.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17195 16792 bytes

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