Malicious PDF — malware analysis report

Static analysis result for SHA-256 5993b43944ab74c3…

MALICIOUS

PDF

79.2 KB Created: 2021-07-19 13:35:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 57807e890ad604a6bc022194922fb103 SHA-1: 79d10cefeec30def2f6069f421cf119bc8031974 SHA-256: 5993b43944ab74c3c1e9ba29783eda82234ff7b35ca165287cfd96ea33c248d9
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 URL that mimics a search result for a popular movie, likely serving as a lure for a phishing attack. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6166

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/~3/5VO7y1TeAqQ/square?utm_term=watch+lego+movie+free+online+streaming
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8e0d05fa2eb14b9083b81/1625874641064/backorder_in_supply_chain.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec84a4ff9c8b53cea2905e/1626113188443/lafujonukafi.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f53e720b1749089224652a/1626685042718/data_warehouse_architecture_for_banking_sector.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f4baf6a047b6361234cbff/1626651383082/65514087036.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_off0000d5cb.bin
8204adee3f333bf7805fca1cecc277cc9ebd753ba508973d313bc393264d2713		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CB 10844 bytes
font_01_sfnt_off0000eeae.bin
468b3c7f34b775f842bf2e45befbe504221972db7597725b8039b87ede11f48b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAE 16812 bytes
font_02_sfnt_off00011a16.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A16 16792 bytes

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