Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb862905bc2afc77…

MALICIOUS

PDF

41.5 KB Created: 2020-10-09 12:22:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1d8d31f2927a5c9114e4927b8cc05bd6 SHA-1: e4ba8c2a52ecc83b66549a3854725a231a7d6c44 SHA-256: eb862905bc2afc77c3624d02c59a67980901b2f357974c5e2dfe43d3c3e13961
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/strik?keyword=texas+model+train+shows+2020 In PDF document text
    • https://site-1037914.mozfiles.com/files/1037914/19560945367.pdfIn PDF document text
    • https://site-1038475.mozfiles.com/files/1038475/jojilidapotobumureximev.pdfIn PDF document text
    • https://site-1036719.mozfiles.com/files/1036719/70888567449.pdfIn PDF document text
    • https://site-1040262.mozfiles.com/files/1040262/vodebakofaxodab.pdfIn PDF document text
    • https://site-1042199.mozfiles.com/files/1042199/72126243590.pdfIn PDF document text
    • http://files.nanmillertimes.com/uploads/1/3/1/4/131454699/320e0b51add1.pdfIn PDF document text
    • http://files.wgdairysupply.com/uploads/1/3/2/6/132682790/da19b125d14a9.pdfIn PDF document text
    • http://files.suzannedemontignycounseling.com/uploads/1/3/1/6/131637136/jizaluvizelukux.pdfIn PDF document text
    • http://tiwebiro.creativethoughtevents.com/uploads/1/3/0/7/130738526/4535035.pdfIn PDF document text
    • http://files.authortomanthony.com/uploads/1/3/0/7/130775176/994aa59838.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/fbb74ecb-ac5f-466c-999d-233850e010f2/tazizimodajigawobusewiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/386622c3-01bf-43b9-b016-6b72dad44e5f/jabobulasitajopunesisobal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec4e02fb-5102-44f2-9734-536abe1f0e0a/mufisipawejaxufevukoximi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a117436-0a32-42de-80ff-9ca47e0b935c/76674965014.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6bf1d9e-af15-48ab-a56b-8a135c0c67bd/87596389097.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f5a1667-e9ce-4205-95ef-427915cf786f/53041105746.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b1925d6-6108-4744-b8a2-37c882e02efe/62629522539.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d7d7fdf-33e3-4117-aea4-5bc4802263b4/98685608267.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_off0000622f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x622F 5448 bytes
SHA-256: 79ead43828b4ed404ad1dc5938474b50c0e1f87974fe94986800bf4690fb392b
font_01_sfnt_off00007498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7498 10752 bytes
SHA-256: b6c980017c3138bd56a76b91f50d454d7e4f71b2c83b059df42d781b46dabda2

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