Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ff45099eafa7434…

MALICIOUS

PDF

40.0 KB Created: 2020-10-25 10:59:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 25c48f86cd01f390bef2a5a105327abb SHA-1: 5f2763515f033954b25a0f01c3ab2428ab3f223f SHA-256: 2ff45099eafa7434ac830ba514e20167a518a4e868fe749280fb0f7574b1f6be
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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.link/pify?keyword=induji+induji+kya+hua+aapko In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374954/normal_5f89ad9ea4c7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368751/normal_5f885c583a728.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412183/normal_5f95254691479.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381347/normal_5f93d6cc13356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f8740f2992df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383702/normal_5f8e6ef597f5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370768/normal_5f91ec997c6c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_5f94832494493.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/8431065.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/gasegajefiw_tazol.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/1447827.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392647/normal_5f92857fd46ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372355/normal_5f925f9a0d046.pdfIn PDF document text
    • https://tevumusavobe.weebly.com/uploads/1/3/4/1/134108657/wejufomawetuxogadeva.pdfIn PDF document text
    • https://sepenunaxob.weebly.com/uploads/1/3/0/7/130776074/9428907.pdfIn PDF document text
    • https://sovopubi.weebly.com/uploads/1/3/0/7/130775052/seramoropofo.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/4345423.pdfIn PDF document text
    • https://lesofetu.weebly.com/uploads/1/3/1/3/131378838/6451069.pdfIn PDF document text
    • https://fupexorugukemig.weebly.com/uploads/1/3/0/8/130814763/bonemezukogedit-pawobelibepilev-pevive-bironofugave.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005f50.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005f50.bin)
    • 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 extracted file (font_00_sfnt_off00005f50.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F50 4920 bytes
SHA-256: fc33265b82de44b1f0bd9d3ff95f99e489f0808e4a228dc35078b9c67289069a
font_01_sfnt_off00007016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7016 10288 bytes
SHA-256: f58ddd859dad49fb38b3c29dd12a47fa157c4684d0a2c1d0a4218f3088dfb468