Malicious PDF — malware analysis report

Static analysis result for SHA-256 955bcefa2d6369e6…

MALICIOUS

PDF

40.3 KB Created: 2020-10-05 10:32:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 2763798f2c87b097f34cdc88ea85739c SHA-1: 90d7757be87a24655ff333a7e800cb0f79d6ab51 SHA-256: 955bcefa2d6369e67a14bc5e64c62cb4413fa4fe590490b79859f338eb83a297
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://ggtraff.ru/strik?keyword=holy+bible+tagalog+version+free++pdf In PDF document text
    • http://files.bandanovaalianca.org/uploads/1/3/0/9/130969301/buxer.pdfIn PDF document text
    • http://files.kanein111.com/uploads/1/3/1/8/131857284/goziw_jafufejowatut_redafutelupol.pdfIn PDF document text
    • http://sopub.findingoneness.com/uploads/1/3/1/0/131071164/towurir.pdfIn PDF document text
    • http://files.erdius.org/uploads/1/3/2/8/132814371/9652316.pdfIn PDF document text
    • https://site-1036652.mozfiles.com/files/1036652/xofotevagexobajowovupuw.pdfIn PDF document text
    • https://site-1037922.mozfiles.com/files/1037922/57946553179.pdfIn PDF document text
    • http://nexutog.pmd-geoffbarker.com.au/uploads/1/3/1/0/131070089/675466.pdfIn PDF document text
    • http://files.teamshaunyboy.com/uploads/1/3/1/3/131398236/4e86f8b00d0.pdfIn PDF document text
    • http://files.runcibletheatre.org/uploads/1/3/0/8/130813923/pusulukod_roworivuveb.pdfIn PDF document text
    • http://files.ontherisetennis.com/uploads/1/3/1/4/131406049/11281140d60c.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/bcd99f59-2ea5-454b-a8f3-6c466a86bb09/96538609646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6da4fb5a-bd76-41f8-abd2-b9551054a740/jivasatititaxozowodilime.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_off00005145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5145 5260 bytes
SHA-256: c7487d35733b5d51331816388e131100700d5ae721a42f76cc31a68c54acd3b6
font_01_sfnt_off00006335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6335 10232 bytes
SHA-256: 6124f1f2b930596d41d67d4023d4f13413e34303d4c08d295f2f5ac9affcbcd4
font_02_sfnt_off00008643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8643 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71