Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e3f5198e586b3b0…

MALICIOUS

PDF

58.4 KB Created: 2020-10-02 04:31:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9405a0c7b3d2fb1ee8e16aaf13d2654c SHA-1: f4732e3f3c726821820ed06811afb914600bcb0f SHA-256: 8e3f5198e586b3b01ab093b5eea5ef4c263ee44d43ca2d3471cc0fab3607c688
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=baby+girl+names+in+tamil+font+pdf In PDF document text
    • http://files.levusboutique.com/uploads/1/3/1/6/131606923/zudexifim-ninude-lefixakiva.pdfIn PDF document text
    • http://zazapelu.wyaskwellness.com/uploads/1/3/0/9/130969596/37e3e77dce02e.pdfIn PDF document text
    • http://digariduk.nicholasroyle.com/uploads/1/3/0/7/130740572/8972674.pdfIn PDF document text
    • http://files.christopherdavidroche.com/uploads/1/3/2/7/132740498/5642674.pdfIn PDF document text
    • http://medexo.theglutenglitch.com/uploads/1/3/1/4/131453247/nunel_fexukin.pdfIn PDF document text
    • https://site-1036751.mozfiles.com/files/1036751/sodinagimufo.pdfIn PDF document text
    • https://site-1036633.mozfiles.com/files/1036633/vozipiw.pdfIn PDF document text
    • https://site-1038750.mozfiles.com/files/1038750/wujaxizoveful.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/a859924d-da63-4aab-9c68-93778014392e/fopezikisinogibero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1131b499-5845-4025-851b-4e1795213793/sojidasafejix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/195656b9-f06d-45f8-81f5-95ae485ddce2/vawemutijebaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/633087ab-4645-4bd2-84ff-5adbc8205ce0/4326374202.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff47eac2-16df-4a98-bc95-da01ee173ebe/25011254720.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28f19ea0-7351-4731-8840-67adab7eecd0/51531807237.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2419e699-6066-466e-a3c4-684cc3d2fa30/fanuburapinarisitojun.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000729c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x729C 5652 bytes
SHA-256: ea57369dbca76c6a95b299fc63491667dabe266865eadf10c984180dfa39d61e
font_01_sfnt_off000085be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85BE 5568 bytes
SHA-256: 35ac87a648eb42b729c43cfbd26e884451771cc136ff2d451ed06ff578f79a5b
font_02_sfnt_off00009861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9861 14300 bytes
SHA-256: 4787bebceb61be50b66bd75c0d83b6846ede9d11c24ccb9fdedf9d853e4a4c60
font_03_sfnt_off0000c4c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4C9 16208 bytes
SHA-256: da4b164e559004f6353f0a5dc6ff39c750a4dde01d42a555aa960bfbd3bf1c3f

Open this report in the interactive analyzer, or submit your own file for analysis.