Malicious PDF — malware analysis report

Static analysis result for SHA-256 78245a25e77e2a70…

MALICIOUS

PDF

44.6 KB Created: 2020-10-22 03:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-16
MD5: d75dc0324ca1ae648a4e935e1b7d3479 SHA-1: ba8065904bd86b2665eb5507d2eebba528f4ce50 SHA-256: 78245a25e77e2a70e947fda6426dafff5376ce14c7567e4dab789f190082351d
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://gettraff.ru/wb?keyword=iron%20fist%20kung%20fu In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368977/normal_5f8a4a265edeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388842/normal_5f8e29b4b2373.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374682/normal_5f8b7cf60c49b.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/woxabusukujawe-vanodozofajesa-wanezine.pdfIn PDF document text
    • https://dejuxowiku.weebly.com/uploads/1/3/0/7/130738850/1259929.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/wasina.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/valedakivoxi.pdfIn PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/3f9417de45.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/zuvefusu_tewojawowebav.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/7971148.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/1396c239-c3c6-4552-a7b8-808384b04133/jakoxibetozixefabukez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a37ad35a-c4fa-451e-8e95-08e745d76e77/samupefigedopu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db27e9bf-4f18-45bf-ae0f-ee67a12ff0b0/balodap.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/nevofep.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/hip_arthroscopy_portals.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/january_2020_calendar_printable.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_off00006415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6415 3744 bytes
SHA-256: aaa1cfd3b20cce64a520c3ebcfb325ed59a9cdf03820410041ccfb764bfc7bf2
font_01_sfnt_off0000716e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x716E 4692 bytes
SHA-256: f39c1c5a49b61b59a3313cf3b592487f42723c7783eac09e2a3c3646d3ffeec6
font_02_sfnt_off00008178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8178 10656 bytes
SHA-256: 6ad1118e654e2571efbf3e80b162289a1ce865ea01052743d06e351f53fab4de

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