Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e78d6d1c0629704…

MALICIOUS

PDF

77.9 KB Created: 2021-07-13 15:34:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 79696efa2f16920f338dc27e591eb3f4 SHA-1: d75c71edec1b87204c49ff46a3768369b062e820 SHA-256: 0e78d6d1c0629704ec3bbbdd8eae8ac95892ac733595d7d094d2d2b7baffb99f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by a machine learning classifier and ClamAV as malicious. It contains embedded URLs that likely serve as lures or redirect to malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to exploit vulnerabilities or trick users into downloading further payloads, aligning with a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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/AnJPYMJXbyQ/square?utm_term=care+and+concern+meaning
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec78f07e2b6271615a590a/1626110193061/design_brief_meaning.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8be32e534972f7b796aac/1625865779062/74300118271.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec83eefa40056e74d248f2/1626113006529/cold_feet_and_aching_legs.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec71a2950202184f0ec361/1626108322772/a_to_z_tracing_worksheet.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e875e6b3fed63d024eab68/1625847270646/82885802763.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec9f755f8bf9690720757e/1626120053994/interpreting_our_heritage.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e87eaf56d6f74a83388ba7/1625849519500/focal_atypical_endometrial_hyperplasia.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e9181b6e267257943a8021/1625888795478/peditakase.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8e2ed566ded7d61a9a128/1625875181430/drywall_partition_details.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_off0000d2f2.bin
06d38ea1e2b8336d24d54bec60c39cce71ff4b57949e4e749301cf6f8bf4287a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F2 16072 bytes
font_01_sfnt_off0000fc79.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC79 16792 bytes
font_02_sfnt_off00011490.bin
a240bcdd1dc73dc4b0ab7d1a39839e3c779f49372284bd697359d809837099ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11490 10432 bytes

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