Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e5f9ae071d84b4…

MALICIOUS

PDF

73.5 KB Created: 2021-07-16 05:47:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e233e34475d24af8e57780dc606cf734 SHA-1: 005b0030a848c5c6182eb9059c4670955dd1cf6a SHA-256: 06e5f9ae071d84b4761baba0cd0e474cefcc5b090e5de59a3f7755795d7f5667
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs, suggesting it may be used for phishing or to redirect users to malicious sites. The obfuscated document body and the presence of external URIs are common tactics in PDF-based malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7788

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/eaN1Eb74jJI/square?utm_term=brexit+news+today
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e90737e6a58043b690782c/1625884471804/little_mexico_chiquito.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0650ee8e6bb0d49216506/1626367246632/professional_ethics_and_human_values_notes.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60eca04fe0784948549b2651/1626120271493/percent_composition_meaning.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_off0000bed2.bin
8cde2f8c8bd536a1353aa12e4b3fc7a0aa0b052ba781f4ef5e60da77e34c593b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBED2 10548 bytes
font_01_sfnt_off0000d71e.bin
b8074191bb98580b11d41c3e15841505496f4f67db3b4c2c862fa210d0f36dea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD71E 16860 bytes
font_02_sfnt_off00010370.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10370 16792 bytes

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