Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2da4fd24ba77a94…

MALICIOUS

PDF

77.5 KB Created: 2021-07-20 04:56:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 30589f5dec2c5b9d721ca91a2d304c28 SHA-1: 3195484f3764cb649672febc8d1145b59b300b7e SHA-256: f2da4fd24ba77a9475666d93e8435542b0129d65526cf16c9b4d67c010bed4be
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains embedded URLs that point to external resources, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF_URI heuristic indicates the presence of external links within the document, which are often used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7390

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/u8n3KCQdUYc/square?utm_term=fallen+in+love+with+someone+else
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f12382d1d8e65aae869268/1626416002628/nezitejofofo.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f4ad76a047b6361233feca/1626647926465/14254649866.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eca1d7bcf8be39b5081ca7/1626120663462/wordsearch_print_off_sheets.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec91e24f558d0bf39cea6a/1626116579126/pexotabivenitebeju.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_off0000d095.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD095 16792 bytes
font_01_sfnt_off0000e8ac.bin
7982d2cdb4597c223118772f9292de735649888819091f17e8fb6a7b61e7b9f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8AC 10400 bytes
font_02_sfnt_off0001000a.bin
d48e76df6a0e4916049b1bf4f50580c71586c5cfab92352fa78d9b65ac6325b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1000A 16328 bytes

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