Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b1bb050782c0654…

MALICIOUS

PDF

47.6 KB Created: 2020-10-15 15:17:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 83d4568d92cda0af43150ca6609f3cdb SHA-1: 000e641570482dd4bcc42ea901ad7642de95cf37 SHA-256: 6b1bb050782c0654f982d8b62ce95ff02c48294ccfa2f5cd7affe4e5001495b1
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://cctraff.ru/strik?keyword=guide+catheter+vs+sheath In PDF document text
    • https://site-1042452.mozfiles.com/files/1042452/4237160056.pdfIn PDF document text
    • https://site-1038920.mozfiles.com/files/1038920/fomojuganuv.pdfIn PDF document text
    • https://site-1043375.mozfiles.com/files/1043375/firebird_popular_120_boiler_manual.pdfIn PDF document text
    • https://site-1040354.mozfiles.com/files/1040354/35794699677.pdfIn PDF document text
    • https://site-1043843.mozfiles.com/files/1043843/gamegajabujipupora.pdfIn PDF document text
    • https://site-1043132.mozfiles.com/files/1043132/46237193192.pdfIn PDF document text
    • https://site-1037848.mozfiles.com/files/1037848/kavudemolenemetapo.pdfIn PDF document text
    • https://site-1038422.mozfiles.com/files/1038422/ritekikedudowikasedafozev.pdfIn PDF document text
    • https://site-1039273.mozfiles.com/files/1039273/telagofope.pdfIn PDF document text
    • https://site-1037024.mozfiles.com/files/1037024/dufoloruvax.pdfIn PDF document text
    • https://site-1042971.mozfiles.com/files/1042971/pumegutepisafa.pdfIn PDF document text
    • https://site-1036868.mozfiles.com/files/1036868/gozud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5f87600657e90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f8743cea71c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f8747122ef9d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/dd0dd66d-2fdb-4f80-a078-9650287ae9b9/82809519592.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b3d23c5-ecc4-418d-baae-8bb9284775ef/xupepusojire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b05ae34c-c5d6-4514-8693-44a4cfd19a34/ziruwisifon.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F87 4752 bytes
SHA-256: 2b0504217c8733bbf183d62d978e1ce321a03af90b37aea0e56ddc699cc09441
font_01_sfnt_off00007fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC9 10504 bytes
SHA-256: dcb7251a3c2fdf97cda8a6693e90248cc144f434ee31496b12a38ab94e4ad8c8
font_02_sfnt_off0000a3a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3A4 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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