Malicious PDF — malware analysis report

Static analysis result for SHA-256 c11b4bdf472b3846…

MALICIOUS

PDF

52.8 KB Created: 2020-10-18 12:13:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d3354427ce93b52627df94e5999ee103 SHA-1: eabb257a11d0431d02ec9cdb07a7f40e781c8973 SHA-256: c11b4bdf472b3846f5b44b5de1e3f2d1344f46e3dc3df287774501aad0d7c0b6
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://ggtraff.ru/123?keyword=jarrod+radnich+lord+of+the+rings+pdf In PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/bizovisizefowe-firuxid-wokudalonomum.pdfIn PDF document text
    • https://vozutadisifik.weebly.com/uploads/1/3/1/4/131483249/magusewuk.pdfIn PDF document text
    • https://takijotirodone.weebly.com/uploads/1/3/1/6/131637658/mafisas-zelidipele-vamarimusela-xawetebetalove.pdfIn PDF document text
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/4808741.pdfIn PDF document text
    • https://topodomero.weebly.com/uploads/1/3/2/6/132696018/687778.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365549/normal_5f8988e25f3aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5f86ffea1fec9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370780/normal_5f88cb509e573.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f87200871a37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368493/normal_5f880b054d3f5.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/4535287.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/jimasamututam-xosatarejapo.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xekena.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/digokasawuj-jipamuputevuf.pdfIn PDF document text
    • https://raxiruzaxulam.weebly.com/uploads/1/3/0/7/130738564/ralagazomavijuf_simipod.pdfIn PDF document text
    • https://rajomiluti.weebly.com/uploads/1/3/2/6/132682989/3810973.pdfIn PDF document text
    • https://ranerenonosojib.weebly.com/uploads/1/3/1/4/131483420/xemukogoti.pdfIn PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/gapas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4ecb329-6e27-43a2-a08d-1e104d1175df/kozizirebomepuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a26a9e7c-ef73-46ed-b855-31f6cfd751f2/38356457155.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/025512c3-799f-4c28-8664-5c29bee121cb/57895882411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4658/2944/files/99255279692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/1246/7106/files/47721277729.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_off0000705c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x705C 5624 bytes
SHA-256: d988b2bc02fd56fba16882554089cb241b46b6846814728f5bba4e828bd73f86
font_01_sfnt_off000083ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BA 5408 bytes
SHA-256: bac56461a57ef95aedb541eeba059d9a3832f605dafea257c1798b62b497d44b
font_02_sfnt_off00009611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9611 15288 bytes
SHA-256: e5460418b13df0883d514efcc8f4ca9d3886b3a04faac1a606d4deb86d09916c

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