Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b81677c9a19556…

MALICIOUS

PDF

78.5 KB Created: 2021-07-16 20:08:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3441cb8a2a9cbb81e90dbce64b7117ad SHA-1: da5b409f523f5e38e1f0c7e21f5dc3309ab26a70 SHA-256: d0b81677c9a1955634f7536ec870045df6856839cfe7ceb74cab2b059486e7c8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains embedded URLs, one of which points to a suspicious Google feedproxy address, suggesting a potential lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6556

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/r_nBws6J8g8/square?utm_term=tamil+hollywood+movies+2020+free+download
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0c73ffcdff1298e5012fb/1626392383747/xosoxo.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edd08d1c6c1a61d523849e/1626198158407/dielectric_and_electric_field.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f0982eabe2f010046cae95/1626380335196/85464132214.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_off0000d06a.bin
8a9e3597f60815d31ed5cb71cd458aa65cdef139cff55f08fc07156b20d9e798		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD06A 10992 bytes
font_01_sfnt_off0000e9d2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D2 16792 bytes
font_02_sfnt_off000101e4.bin
3d4eb97abb02d5ee9c125bb999436119cadfe632a14bb9c1b8b3b91bb0c8c973		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101E4 16928 bytes

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