Malicious PDF — malware analysis report

Static analysis result for SHA-256 4877b0139efcdedd…

MALICIOUS

PDF

61.3 KB Created: 2020-10-04 08:46:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-22
MD5: 02162d2ebeb7a04ee00e63bcc2fa5e59 SHA-1: bf71e41e7efb3f60b0abb498fe90710395eb9997 SHA-256: 4877b0139efcdedd09c5f34165dc487058d0d20e52091d83aef75b24f44a9180
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/strik?keyword=silver+linings+playbook+script In PDF document text
    • http://zavax.perksautospa.net/uploads/1/3/2/6/132682076/b9771.pdfIn PDF document text
    • http://nidelowe.cbtbowling.com/uploads/1/3/1/4/131453990/5bad533aa6daf8a.pdfIn PDF document text
    • http://files.salonsonja.com/uploads/1/3/0/8/130814192/8135312.pdfIn PDF document text
    • http://files.yemanjathefilm.com/uploads/1/3/0/9/130969950/a8c67400.pdfIn PDF document text
    • http://files.globalubuntu.net/uploads/1/3/0/9/130969742/nakeka.pdfIn PDF document text
    • https://site-1037887.mozfiles.com/files/1037887/kumemekemalinam.pdfIn PDF document text
    • https://site-1037827.mozfiles.com/files/1037827/50056212271.pdfIn PDF document text
    • https://site-1037187.mozfiles.com/files/1037187/fuminusetojon.pdfIn PDF document text
    • https://site-1036885.mozfiles.com/files/1036885/93459505120.pdfIn PDF document text
    • https://site-1038427.mozfiles.com/files/1038427/33104380921.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000b148.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000b148.bin)
    • https://uploads.strikinglycdn.com/files/d154e014-2bd6-4e97-b47b-1cd49d4bb152/lalowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a169f54e-d735-4fbd-8625-a5e15b8493ea/2121788808.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f424e01-e323-4359-b4de-76df9274a827/55807039967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db9bf220-5116-4e0f-a32a-1b7657743667/10218263208.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06c4f103-4a02-4d08-a738-6b3c4ba8507a/wirizezaduwinuwipeguxaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcae7cd9-5a43-4d7b-b9d3-f28a87df13c0/nufudepavudifosupigule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ace9d85-d6aa-4417-b323-875f90948881/sevofu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb8800f4-335b-49b8-ac30-3c1c90fb5c6a/gaditurubev.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 extracted file (font_00_sfnt_off0000b148.bin)

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB148 5568 bytes
SHA-256: 84f1460b171d570ff7145aaa51bc560156f7110e54f7dcb03118091aba65e3ca
font_01_sfnt_off0000c45d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC45D 10384 bytes
SHA-256: 05f2cdc32c933f1fe858c429b5e84a64cd0a6d1d0e18ccf31a71b90eeae80567

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