Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ee02a81dff885e6…

MALICIOUS

PDF

76.8 KB Created: 2021-07-16 04:36:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 80d3b448cc52ab062f8453bb8b991065 SHA-1: 10440683b09e781e1a8a1e657cae9903809b3d7d SHA-256: 1ee02a81dff885e63d8a3669a32341c02fc312e5f27acf5c44870e5ef20dfcbc
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a Squarespace domain, which is often used for phishing lures. While the document body is heavily obfuscated, the presence of the URI and the detection results suggest a phishing attempt to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

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/CcIy6vlvkUk/square?utm_term=five+year+paper+of+10th+class
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f0cca97470266f829300fc/1626393770063/ts_eamcet_2020_important_dates.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec82694a8bde38c344b63f/1626112617791/59782441506.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0b01260adbd7a5d9b5e55/1626386450774/interquartile_range_from_cumulative_frequency_graph.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7d7b760c9e2bcf426f08/1626111355540/how_to_slime_without_glue.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8a97f89f8e700bf8291c/1626114712037/77557187035.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_off0000c9a8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9A8 16792 bytes
font_01_sfnt_off0000e1bf.bin
84c94c66cc947e59754966382392305f9a0d94146ea2370ef1a2a9820c3ac6bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1BF 10804 bytes
font_02_sfnt_off0000fad8.bin
07eed21628224bdbe6073e429f164e8e0a59af9b0df483aacb4443cf98fa4bd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD8 16592 bytes

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