Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dbd53f81805ef2e…

MALICIOUS

PDF

42.0 KB Created: 2020-10-14 21:24:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ccbbe02e92ee76035eacf72b7a8709eb SHA-1: a4a5a97749e97091fdcc2e4b3654d92293f245aa SHA-256: 8dbd53f81805ef2e5c120e748474673b43b5368c0e45224f80b471e6e0c13f44
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://gettraff.ru/pify?keyword=samsung+kies+software+free+download+for+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_5f872f02174cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f870f01e3119.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f870881df57b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f872f643340c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366369/normal_5f871bbeed560.pdfIn PDF document text
    • https://site-1039929.mozfiles.com/files/1039929/nevagoxanexakawofotolodob.pdfIn PDF document text
    • https://site-1038844.mozfiles.com/files/1038844/35294676686.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f871c9522480.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f8726be4216c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f872ebfdade4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f8730e3e66cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_5f870f9173d02.pdfIn PDF document text
    • https://site-1038477.mozfiles.com/files/1038477/1958009801.pdfIn PDF document text
    • https://site-1036851.mozfiles.com/files/1036851/81249457294.pdfIn PDF document text
    • https://site-1036691.mozfiles.com/files/1036691/46559475095.pdfIn PDF document text
    • https://site-1043908.mozfiles.com/files/1043908/zixojowudofakizofi.pdfIn PDF document text
    • https://site-1039147.mozfiles.com/files/1039147/29117473487.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/6b631995-b829-442a-a098-fb3f4f9d7b04/wabujugobaje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d4d3c2b-d553-41a3-a79d-60f28939b8e5/7920856360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df43be43-f24e-4c3e-9b2c-e1995bbfade0/xinozivazutewew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e95e69d-96fe-4dbb-98c1-e790dd35b5ac/16674179280.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c1dae28-e252-4532-979a-52422448ad96/rifujagosibupilapukumixuz.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000647d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647D 5488 bytes
SHA-256: af32bc79301570dc950cce800b03f9a820c2490750ca17efec7aef1a6c102697
font_01_sfnt_off0000771e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x771E 10388 bytes
SHA-256: aea231441be6da5a9b7ad1ae76224eeca631cb2b84f2799d249d3a90b6f607a8

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