Malicious PDF — malware analysis report

Static analysis result for SHA-256 e95a275eca08d0c2…

MALICIOUS

PDF

79.1 KB Created: 2021-07-14 00:40:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a3f63e740484216fd10effcdf446e982 SHA-1: 64566cc9d037650dd5a326ea030bb22795886be0 SHA-256: e95a275eca08d0c290ab6400afd7ba05a38820a5374779b8a59935234ccabed7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as malicious and ML classifiers also indicated a high probability of maliciousness. It contains multiple embedded URLs that point to external resources, suggesting an attempt to redirect the user to potentially harmful sites. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection profile strongly suggest a phishing or malware distribution vector, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5764

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/razvivatel/yapz/~3/kVSxLQpkboc/square?utm_term=how+to+connect+alexa+dot+to+bluetooth
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8e045563c1506a8b2b12d/1625874501212/ford_ranger_manual_or_automatic.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edbbda7dc32260eb54e9d2/1626192858319/38844122042.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ed89acc76d6b0ba00f1cea/1626180012220/find_the_constant_of_proportionality_for_the_table_of_values.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee0379afeffb59e675da41/1626211193416/panogufupikisimidiwa.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_off0000d369.bin
9426fbebd3c8655abe2467bd5bff222ec05ba07863a10cff3d67c3055a85037d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD369 16888 bytes
font_01_sfnt_off0000ff08.bin
85b5be5931ce390ce0cc47e85ff1550cd96058626688a2b27518220416622be1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF08 10528 bytes
font_02_sfnt_off000116f8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116F8 16792 bytes

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