Malicious PDF — malware analysis report

Static analysis result for SHA-256 a924d20edb70bd05…

MALICIOUS

PDF

103.3 KB Created: 2022-04-14 08:20:25 +03:00 Authoring application: mPDF 7.1.0 First seen: 2023-12-11
MD5: c2946d9063665ed779b74594f24acad7 SHA-1: 22c8847c69c537ccc5aefa5e72bab0328f3f734a SHA-256: a924d20edb70bd05453c15c8c2a8a2fc1ef7a6410646740eeaae9b92483bb0fe
92 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0012

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/company PDF link annotation
    • http://vertex-decor.com/userfiles/case-equipment-operator-manuals.xmlIn PDF document text
    • http://hanyangsteel.com/files/fckeditor/17376350545f53fed9f229b.xmlIn PDF document text
    • http://schlammatlas.de/en/node/18498In PDF document text
    • http://atlantichurricane.com/images/c5-corvette-manual-transmission-rebuild.pdfIn PDF document text
    • http://atmos-service.com/images/c5-corvette-automatic-or-manual.pdfIn PDF document text
    • http://eco-region31.ru/bosch-troubleshooting-manualIn 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_008_off00006c28.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_008_off00006c28.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_008_off00006c28.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6C28 19996 bytes
SHA-256: 8e639af5f37a01c952d7fa5ae521c275babc199f4d44038938bf51c1324a673d
font_01_sfnt_off0000a204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA204 19964 bytes
SHA-256: 5154a7c8cf7a9b55c2f939ad6a4a8f8327cd6552b9f68a87c49d10dfc747eaa8
polyglot_child_pdf_off0000000f.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0xF 105733 bytes
SHA-256: 3e46fa272ecc52df6bb83843a6174ab1d74c177cb445da3e5f11b12e1ccab950
polyglot_child_pdf_off0000001e.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x1E 105718 bytes
SHA-256: 120d044429131dea13de4895cc788945eb40c4556a0aa9959e228a1bece78885
polyglot_child_pdf_off0000002d.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x2D 105703 bytes
SHA-256: 260e21e77a69283be4da547066555cb8667bd1fad53df364f828347b88adc69d
polyglot_child_pdf_off0000003c.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x3C 105688 bytes
SHA-256: b72338fad566b04823cf30a5857491e21f0271735db11846f97b86c85daf8656

Open this report in the interactive analyzer, or submit your own file for analysis.