Malicious PDF — malware analysis report

Static analysis result for SHA-256 26fd387279ee224c…

MALICIOUS

PDF

48.1 KB Created: 2020-10-03 18:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-19
MD5: a415c463eae88d659cca1e9f990a9e0e SHA-1: 707fc63f3010d3f623b159f2fa3bead5dd2f0585 SHA-256: 26fd387279ee224cc48c79ec997a6b47d0c34ef52e7f1fe7f753a539a55da3a6
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=stds+and+stis+pdf In PDF document text
    • http://files.kapylanterapia.com/uploads/1/3/0/7/130776734/e20c16fc07.pdfIn PDF document text
    • http://files.shotojuku.co.uk/uploads/1/3/1/0/131070220/lubenisarapixa-jatiwagujifodow.pdfIn PDF document text
    • http://files.theolehedgecreeper.co.uk/uploads/1/3/0/9/130969678/dinoku.pdfIn PDF document text
    • http://files.stonebrakerart.com/uploads/1/3/0/8/130874400/kotapujosuteb.pdfIn PDF document text
    • http://files.longridgemusic.com/uploads/1/3/1/4/131407974/figirupu.pdfIn PDF document text
    • http://files.jaynedent.com/uploads/1/3/1/8/131858592/993157.pdfIn PDF document text
    • http://surolu.christinecaldwellcoaching.com/uploads/1/3/0/7/130739094/957dcde4.pdfIn PDF document text
    • http://files.scg-digital.com/uploads/1/3/0/7/130776502/1de5d87b567.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000808c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000808c.bin)
    • https://cdn.shopify.com/s/files/1/0430/9581/8397/files/13473356084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7845/1351/files/69377601971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8827/1773/files/atomic_bomb_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1732abe-f9c5-46f8-b52d-54bafd00e642/nebitate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b51ef29b-8f7a-40e1-8ee1-0d48cf273ba3/pimazek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9b9307a-3dcc-4707-913e-76a64cd68da8/53328148422.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cbc2b6b-5b21-4da5-bad8-17b18ee529c0/53543720663.pdfIn PDF document text
    • https://medlineplus.gov/sexuallytransmitteddiseases.htmlIn 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_off0000808c.bin)

Related samples 5

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_off0000808c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x808C 5008 bytes
SHA-256: b13fba8dcf84e307f750014395d25881fd80a204d2b629f2805320e03bc37f2a
font_01_sfnt_off000091ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91AE 9936 bytes
SHA-256: cf38f068f3215541c46844e93b3f3dca6f5d538ad99e5e630d7e034510725679

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