Malicious PDF — malware analysis report

Static analysis result for SHA-256 c80e7c444fb07d83…

MALICIOUS

PDF

84.0 KB Created: 2021-07-17 08:01:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5ef663286628328731609f4c43011c09 SHA-1: d3eb62bf9240371e5fe37f15a634be39d5f90d1b SHA-256: c80e7c444fb07d83d056cdbd7ea0242753e63085614b7a0b5476c92db857698c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs that point to external resources, identified by heuristics as potentially malicious. ClamAV detection and ML classification further support its malicious nature. The presence of embedded URLs suggests an attempt to redirect the user to a phishing site or download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6049

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/X6hrLWyzjlw/square?utm_term=english+sample+paper+class+12+2021+cbse+with+solution+pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee7249588fb56695179eae/1626239561770/things_that_can_float.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e776491bd7543d7b5bde45/1625781833172/54380876259.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee436427fa864c7d121fcb/1626227556974/24578577466.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f176367ffd90482e3ad6b1/1626437175146/92139204628.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec7ff0fd54eb0708257cb7/1626111984869/zejikemirovoliwuzazega.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d08d.bin
ad646cfef6c05f547fac0e91ae0f8ea4cfcf2cf385ca561ca6a9cdacbe332a6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD08D 11668 bytes
font_01_sfnt_off0000ebd8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD8 16792 bytes
font_02_sfnt_off000103e9.bin
00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103E9 16140 bytes
font_03_sfnt_off00011961.bin
411a1e6ae7090a09a82dffbdc3060f39369d6cb469551c72d00a1ab16631c57e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11961 16220 bytes

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