Malicious PDF — malware analysis report

Static analysis result for SHA-256 f56b9afea75efd3d…

MALICIOUS

PDF

74.5 KB Created: 2021-07-13 10:34:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 72332043b8fc9bc59324ae87d02c0d2b SHA-1: d1dc3ca1c78c82302d27a27efb71c1bcc3721d02 SHA-256: f56b9afea75efd3d75d45c12c6ba34022d80bdc9ec4991bb58c0003f096a98e7
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by both ML classification and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, although some are marked as benign, suggests an attempt to redirect the user to external resources. The file's structure and detection signatures point towards a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7056

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/~3/1LSSs5qy-i4/square?utm_term=pins+and+needles+left+side+of+face
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecd19e526e290873848aff/1626132894787/types_of_polynomial_functions_graphs.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec90619a1cf201f805b7ba/1626116193830/yearly_appraisal_meaning.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec7c705f604029b990c44d/1626111088808/87272467751.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e86f567b15e47d75817d7d/1625845590203/dbd_crossplay_release_date.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_off0000c511.bin
a9e7f58801d53730a4db1acbcc02ecacecbb33323018c0f47a5c3be85ab9e84d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC511 16048 bytes
font_01_sfnt_off0000ee98.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE98 16792 bytes
font_02_sfnt_off000106af.bin
9565fb2deb3de79de6086f89276775cba751c8e98edaa4f49d2436953515e115		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106AF 10372 bytes

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