Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f3290e25b62a010…

MALICIOUS

PDF

103.7 KB Created: 2020-10-03 07:34:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-03
MD5: 4b433448f2f4280a6259a7130e06377e SHA-1: e81355814f5d9d8712d0e8d56eeceb4a661dd254 SHA-256: 5f3290e25b62a0109115f35ec1721194f833d6c735a21433d87e2b75859e5671
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=introduction+to+aircraft+flight+dyna In PDF document text
    • http://files.cosmexmelbourne.com/uploads/1/3/1/3/131378993/a749cd.pdfIn PDF document text
    • http://dosavan.formulax2midatlantic.com/uploads/1/3/0/7/130739860/6887302.pdfIn PDF document text
    • http://files.jeffersonpc.org/uploads/1/3/1/4/131437513/betodijopatemi_kibeseb_nerivomibar_peroxemazow.pdfIn PDF document text
    • http://tigeluko.mistystevensbluegrass.net/uploads/1/3/1/3/131383483/2620353.pdfIn PDF document text
    • http://files.theyardguyinc.com/uploads/1/3/0/7/130739793/mitibiludevoz-befotuvu-wexudujuwi.pdfIn PDF document text
    • http://files.rmtta.com/uploads/1/3/2/6/132681698/9091467.pdfIn PDF document text
    • http://xemipojid.avoiceinthewild.org/uploads/1/3/1/4/131407588/tobifevi.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000154ea.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000154ea.bin)
    • https://uploads.strikinglycdn.com/files/2d58979d-f8c4-4b9b-aa0c-d9d5da42a323/pajukutavagisajawexukata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0185/0273/files/fiwumagubawirepuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3849/7185/files/kuvekabukalukuliko.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_off000154ea.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000154ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154EA 5144 bytes
SHA-256: 00aaadb3dbd86f7c4fddab41a57501be6a18fe75fa769d706c64c255edbf4c96
font_01_sfnt_off0001666c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1666C 13408 bytes
SHA-256: f0a0ac13c86df8c0be6694d0d57333a3a642afca67d0ce5082f0988b2acdfe4c