Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc4d56512689b22…

MALICIOUS

PDF

134.0 KB Created: 2021-07-13 19:06:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0a46596ad245964291a739cd55039a70 SHA-1: 938fb80413fd49b97a5f612a9011675a4b22d539 SHA-256: abc4d56512689b22a85d57587bf091c2dcb22d59a223800b366e045a756994cc
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected by ClamAV as a phishing trojan, indicating malicious intent. The PDF contains embedded URLs, suggesting it may be used to lure users to malicious sites or download further payloads. The presence of duplicate object bodies in the PDF structure is a common obfuscation technique used by malicious documents.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3513

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/um1bUVUAM38/square?utm_term=constant+guilt+and+worry
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8fb34cc7c0864592556fe/1625881396878/beauty_and_the_beast_human.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e95c8a27127e68041781d7/1625906314885/bixokoturijutilurewolat.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec7d3aad4a1a22a3e6d4b7/1626111290540/49545915794.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edad3ecd5f69124b42b124/1626189119077/gegefejago.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_off0001ae78.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AE78 16792 bytes
font_01_sfnt_off0001c68a.bin
c13165467916e51b7880aa810e875d212fa0804295e4232d8383d8991942d1ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C68A 17384 bytes
font_02_sfnt_off0001f3c3.bin
5afc638201f7e7730b904cdf0996a7a3b1441bef27484aa3d87339f62e6e11be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F3C3 10624 bytes

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