Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bb5b9a9d8a8a556…

MALICIOUS

PDF

59.1 KB Created: 2020-04-12 01:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 7db15054529662d3e4299df8cc180a38 SHA-1: 86c0beb9e4d439148862180041bb803dcd65b54f SHA-256: 2bb5b9a9d8a8a556526ea8eefdedd9a5a62e45113d982455c54a3698b973c61d
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9842

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://holanomadas.com/uploads/1/3/0/2/130271179/130271179.html#prentice+hall+gold+geometry+answer+key+3-3.
  • 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 http://holanomadas.com/uploads/1/3/0/2/130271179/130271179.html#prentice+hall+gold+geometry+answer+key+3-3 PDF link annotation
    • http://ruffandpurr.com/uploads/1/3/0/7/130776444/fekogitowa.pdfIn PDF document text
    • http://karbmayoga.com/uploads/1/3/1/3/131398246/dokofubute.pdfIn PDF document text
    • http://pwinthtwe.com/uploads/1/3/0/6/130603827/zinolujozin_lopobad_vuvosolajuk.pdfIn PDF document text
    • http://knipimperium.nl/uploads/1/3/0/9/130969254/5457529.pdfIn PDF document text
    • http://salussouthernhighlands.com/uploads/1/3/0/7/130740065/1131138.pdfIn 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://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A14 9916 bytes
SHA-256: 5d16c56283bad6a73f4c4c7b23de02aa32c36344422655fa3478a58d023a04d9
font_01_sfnt_off0000bf50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF50 2048 bytes
SHA-256: 8ec8c2252d1b0a1cc16637c0e1f77da7137146423e231c53be47bbaf832064ce
font_02_sfnt_off0000c8f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F3 16096 bytes
SHA-256: 58338a7627063af129b4d44d007be1c51a456220dbe5c5ae2b68102140835bfa

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