Malicious PDF — malware analysis report

Static analysis result for SHA-256 04ed011584e1c199…

MALICIOUS

PDF

43.1 KB Created: 2020-10-06 14:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2d6a807fdcccce3e27459792f43f159c SHA-1: 644c82af74dec6971d5964272bb003fdeecf3a85 SHA-256: 04ed011584e1c1998b4139221c306508772a6e4eb90fde17ce34862421b97670
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://cctraff.ru/strik?keyword=encounters+in+avernus+pdf In PDF document text
    • https://site-1037228.mozfiles.com/files/1037228/76331077866.pdfIn PDF document text
    • http://files.sabatinomangini.com/uploads/1/3/1/6/131637255/tasij-mubutaz-popop.pdfIn PDF document text
    • http://files.fashionspeaks.net/uploads/1/3/0/7/130776054/7955401.pdfIn PDF document text
    • http://fepelipuz.knotyourgirl.ca/uploads/1/3/1/8/131855997/nitaxefuwaxu_mumifazonoxem_majid.pdfIn PDF document text
    • http://files.apowersphotography.com/uploads/1/3/1/3/131381428/zaritugif.pdfIn PDF document text
    • http://wibajak.kristenmeeceart.com/uploads/1/3/1/1/131163635/4654232.pdfIn PDF document text
    • http://files.ayamcemani.co.uk/uploads/1/3/2/6/132683484/abc5dd.pdfIn PDF document text
    • http://files.equalmeansera.org/uploads/1/3/1/0/131069893/1143542.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/d0298393-e930-45fe-a46a-d835c8cc34f4/kejizolasepunafiruruxesap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0acdc51-7627-4bac-ab2e-35f512f27b63/romul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bc8ca78-8d8b-4478-bb29-f93be14c6bab/600755006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27edd199-ff34-4d64-8706-3a71dcc2f5cb/26005482757.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5A 5136 bytes
SHA-256: 486ae8e579f2a62dc7b85aa42cb21db0f49e536a0975c2ae4fa310c531f1688a
font_01_sfnt_off00007bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF2 10580 bytes
SHA-256: 2ce3537cc0196a677bfcadf14478e0198185f471784dea0a6be1c934172a3f28