Malicious PDF — malware analysis report

Static analysis result for SHA-256 9efa5854622dc200…

MALICIOUS

PDF

65.3 KB Created: 2020-11-08 01:02:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 9f10caa9ac438119c21080d83b46c606 SHA-1: f3347edb62e501ee63145e7d4d2464aee68175d3 SHA-256: 9efa5854622dc200ad49369a6a26e5656124adaa80491001f9a1aa6e9bb422b2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafftec.ru/aws?keyword=free+owners+manual+2006+dodge+stratus PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409239/normal_5f93a41483a2b.pdfIn PDF document text
    • https://menuwenuxunok.weebly.com/uploads/1/3/4/6/134682317/rawifadavefog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385633/normal_5f8f5039cb80e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f87d00464777.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f87638cae597.pdfIn PDF document text
    • https://wanuwoziburake.weebly.com/uploads/1/3/4/4/134458428/nezitalutavewagafip.pdfIn PDF document text
    • https://pegelukiratek.weebly.com/uploads/1/3/4/5/134503056/zozew_mevevugo_bulod.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/jatitowojol.pdfIn PDF document text
    • https://fufijejelido.weebly.com/uploads/1/3/4/3/134351462/5244a6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402964/normal_5f92f6af2d285.pdfIn PDF document text
    • https://zijubanefim.weebly.com/uploads/1/3/4/3/134349059/5581882.pdfIn PDF document text
    • https://dedotomonifagax.weebly.com/uploads/1/3/1/6/131606429/vanevisadusagu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_5f8f1a4402864.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://vuxogomirus.files.wordpress.com/2020/11/contoh_soal_akuntansi_perusahaan_dagang_lengkap.pdfIn PDF document text
    • https://panezij.files.wordpress.com/2020/11/kenaxo.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E5F 5452 bytes
SHA-256: 1ca8b08070e958ef66f2a8acc08364704d2b15b48913aa6cfa370c45df41969c
font_01_sfnt_off0000a0de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0DE 16968 bytes
SHA-256: f89628e51babade475abaf7cf8971a988ad1ac89f4a146b8295eebe532ba91d0
font_02_sfnt_off0000d467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD467 16132 bytes
SHA-256: 4f6d6443d667672870c38ce4e1d364e29e61a0df6fd2d8217a47270b9fff04c9
font_03_sfnt_off0000e959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE959 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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