Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5668297416df7cf…

MALICIOUS

PDF

42.5 KB Created: 2020-11-09 07:46:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: b109e8252735fdc2e7b13d3fe1457a2a SHA-1: 2cce821e9de44190f0058e8d85f6ed67a5603f98 SHA-256: d5668297416df7cf69fb125738131c3433bc7ea75466b4af91252fed541e7902
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://trafffi.ru/123?keyword=free+fire+mod+menu+apk+download PDF link annotation
    • https://rizowexerezo.weebly.com/uploads/1/3/4/2/134265486/tubokezuwo.pdfIn PDF document text
    • https://xomevore.weebly.com/uploads/1/3/4/3/134346529/minejofixunoluzu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414848/normal_5f95f2bab5149.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/ed6f8de4f.pdfIn PDF document text
    • https://mupaxeruzu.weebly.com/uploads/1/3/4/5/134597089/914fe5ca.pdfIn PDF document text
    • https://dawasakubibovo.weebly.com/uploads/1/3/4/3/134384666/5ff1f5832fb.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/likanutavorolebonat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423460/normal_5f99d9ac9ff49.pdfIn PDF document text
    • https://jutebipofan.weebly.com/uploads/1/3/4/3/134334370/4533747.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f874c2bd4bc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369783/normal_5f88cc544f6c5.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://lirurib.files.wordpress.com/2020/11/silivibokajikoruloxom.pdfIn PDF document text
    • https://mepugen.files.wordpress.com/2020/11/kazazudusitozoluji.pdfIn PDF document text
    • https://rezekine.files.wordpress.com/2020/11/tatojesanawav.pdfIn PDF document text
    • https://bagiwes.files.wordpress.com/2020/11/babufunudasegesumodulud.pdfIn PDF document text
    • https://s3.amazonaws.com/rijedifatufod/jadiruxi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5363 4920 bytes
SHA-256: d9af8b716c880d0af8f460f5d060cedbe0f0fa8d63469a13f835fa21d0eb039a
font_01_sfnt_off0000640e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640E 13272 bytes
SHA-256: b30a125423799fc2586ebe373d1ccb9816b944d8c3be9927291f3da9dcc0c3cc
font_02_sfnt_off00008d42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D42 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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