Malicious PDF — malware analysis report

Static analysis result for SHA-256 4226e51ec836dbc3…

MALICIOUS

PDF

75.7 KB Created: 2021-02-27 01:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8c15cc50d0c801a9a0fa0dc23c6765c6 SHA-1: 352f07c07ad288e8f58f3d983f7b3cf652700b01 SHA-256: 4226e51ec836dbc30aa4111ccabed19034d1cf3fb5cca4f39b5ee0e23e80d8e5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dugedepap.ru/wix?keyword=v+for+vendetta+film+study+guide PDF link annotation
    • http://rerulekoba.66ghz.com/four_lines_handwriting_sheet.pdfIn PDF document text
    • https://vetenejoxo.weebly.com/uploads/1/3/1/3/131379321/zexizufimut-dabirokuzaxoken-fawov-wajebabodu.pdfIn PDF document text
    • https://jexolelogirif.weebly.com/uploads/1/3/4/9/134901145/3580060.pdfIn PDF document text
    • https://xajerunufunofe.weebly.com/uploads/1/3/1/3/131378991/5f89ba2e985f.pdfIn PDF document text
    • http://wamepiguvoj.iblogger.org/43333894293.pdfIn PDF document text
    • http://zumikavu.22web.org/runecrafting_guide_osrs_f2p.pdfIn PDF document text
    • http://pukazabix.22web.org/basic_instinct_2_sub_indo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414159/normal_6016d24769aaf.pdfIn PDF document text
    • http://nigasheff.xyz/5-point_likert_scale_range_interpretationokl9q.pdfIn PDF document text
    • https://jerolukemotib.weebly.com/uploads/1/3/0/8/130874115/9a2e906.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387244/normal_5fd1366f218b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444643/normal_601341bdd01a9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rakojumetaxo.epizy.com/android_sdk_tools_installed_with_unity_location.pdfIn PDF document text
    • http://xaxotuk.epizy.com/bolens_lawn_tractor_38.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/26245208319.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ece7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE7 5356 bytes
SHA-256: dff049abcf62dc846780ceff341c70195b1c5a686e70aed7cf79c44ea2568baf
font_01_sfnt_off0000ff1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1D 10212 bytes
SHA-256: 673929da8b38c8d692798f461c127c041547fe20181e294bb10d399f74ea0675