Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9de56462a57540b…

MALICIOUS

PDF

43.2 KB Created: 2020-10-04 03:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e9aecdeb8bc1251cc5cc3f7e5414c632 SHA-1: ba3ec24194b2b4bba4bf3091514e642fb2f93863 SHA-256: c9de56462a57540bd7f3b6c4dc1c1ce448f2c5c576aafe36c3ab4489b719cb4b
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.ru/pify?keyword=weed+popper+garden+weasel In PDF document text
    • https://site-1036884.mozfiles.com/files/1036884/80406090605.pdfIn PDF document text
    • https://site-1041690.mozfiles.com/files/1041690/vuromofora.pdfIn PDF document text
    • https://site-1036633.mozfiles.com/files/1036633/77344282843.pdfIn PDF document text
    • https://site-1037019.mozfiles.com/files/1037019/fuvizadun.pdfIn PDF document text
    • http://niworotil.kitchentowncurbside.com/uploads/1/3/1/4/131437069/883051.pdfIn PDF document text
    • https://site-1037219.mozfiles.com/files/1037219/sapixonupesek.pdfIn PDF document text
    • https://site-1037905.mozfiles.com/files/1037905/57083920202.pdfIn PDF document text
    • https://site-1040687.mozfiles.com/files/1040687/kokiralisorazet.pdfIn PDF document text
    • https://site-1038744.mozfiles.com/files/1038744/31450728321.pdfIn PDF document text
    • https://site-1040794.mozfiles.com/files/1040794/zadem.pdfIn PDF document text
    • https://site-1040223.mozfiles.com/files/1040223/79604556074.pdfIn PDF document text
    • https://site-1036995.mozfiles.com/files/1036995/bojemikodomixizan.pdfIn PDF document text
    • https://site-1037024.mozfiles.com/files/1037024/dazusiwuweg.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
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E30 4892 bytes
SHA-256: c4b6f428e88b476bd7dc1bc057b66c9f95022195a0498572949b7a86eeabd875
font_01_sfnt_off00006eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEE 10224 bytes
SHA-256: 01efecd28ec4de963f5c6baa5eaa11fc64c87899cf5032004878edeaf1eefdca
font_02_sfnt_off000091ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91EE 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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