Malicious PDF — malware analysis report

Static analysis result for SHA-256 a20883da2a5304cd…

MALICIOUS

PDF

173.1 KB Created: 2020-12-05 13:49:24 +03:00 Authoring application: mPDF 7.1.0 First seen: 2023-12-11
MD5: 5e5199373c90d6afc9b860d648dc888f SHA-1: a7cc59d14cabcb387143afb5aea3c52f734fce1a SHA-256: a20883da2a5304cdfd110eac557a4a8d6314ac575e4c745ae232e38acc5ff240
72 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0004

Heuristics 4

  • Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGE
    A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://srwt.ru/pdf/canon PDF link annotation
    • http://shosholoza.de/crown-vic-manual-swap-cost.xmlIn PDF document text
    • http://geose.ru/userfiles/dwm-manual.xmlIn PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (stream_009_off00007871.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_009_off00007871.bin)
🗂 Part of campaign: secureserver.net 1471 samples

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off00007871.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7871 20040 bytes
SHA-256: f74ee16628f0d619351c153107c4fbfa7a2dc2cf01b01b228cedc75a53622b4b
font_01_sfnt_off0000ae70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE70 19964 bytes
SHA-256: 5154a7c8cf7a9b55c2f939ad6a4a8f8327cd6552b9f68a87c49d10dfc747eaa8
polyglot_child_pdf_off0000000f.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0xF 177263 bytes
SHA-256: dadc86b1db6196471383dcb575e200971d7a340f6021d32332eaee77251e57dc
polyglot_child_pdf_off0000001e.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x1E 177248 bytes
SHA-256: 730bc26ef16ea11bdef030eb28ea5f1886a898603b671b3d85ee3ffba6dcca9b
polyglot_child_pdf_off0000002d.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x2D 177233 bytes
SHA-256: 1d49c52ab5ba6b45f71c80a73914ef5e476477265a21af6fcd70fa617704efc5
polyglot_child_pdf_off0000003c.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x3C 177218 bytes
SHA-256: 573407294156c084643d254568510ba44d108b92a34a435361ef40569711f2fe

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