Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aeec8f292762bcb…

MALICIOUS

PDF

80.3 KB Created: 2021-07-15 22:07:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a202bb88980c2e77a0b3c5bc88f22aa0 SHA-1: 3b7de712860795e392c177d04324b58a06b7eb92 SHA-256: 9aeec8f292762bcbdfe0fb37947099c03855d0974fbd442611148b783687cfcc
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 phishing attempt. The PDF contains embedded URLs, some of which are associated with Squarespace, suggesting a lure to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious intent, likely to trick users into downloading further malware or divulging sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8298

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/iCUEKX862tE/square?utm_term=to+be+incensed
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edf040a4137771ba0415ec/1626206272552/noxix.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee0107afeffb59e6759c9a/1626210567714/93923271381.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f075d991b8e868d2890cbd/1626371546090/meaning_of_akbar_in_english.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edd60a77fc8e778b565f96/1626199562841/8762421049.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec910eb3b63f0898f2fd15/1626116366832/neet_pg_previous_year_question_papers.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_off0000dc0b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0B 16792 bytes
font_01_sfnt_off0000f422.bin
99a5e373fa209eb9899a501fde3cc72eb94f183d51a0e29f1cbf7036e35e3035		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF422 10060 bytes
font_02_sfnt_off00010a99.bin
88673acad255e6f50b9fc2f9c7ae51e09a1b54ba65978a34294031be7f72ebbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A99 16652 bytes

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