Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb6ae7ff93d1f939…

MALICIOUS

PDF

44.1 KB Created: 2020-10-08 08:04:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 6779a7faf1f14324e95b54b1884acaad SHA-1: 6ca755bfe6a377bae3cfd3cb4a3147fb520b085b SHA-256: eb6ae7ff93d1f939c285331c18b0a0be4eff96b2c90cb40f6cab2a5dba7c8384
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=let+it+go+frozen+violin+sheet+music In PDF document text
    • http://files.mrappoa.com/uploads/1/3/0/7/130775545/1571149.pdfIn PDF document text
    • http://files.publicsportsbook.com/uploads/1/3/2/7/132710589/c417c2eff9fd289.pdfIn PDF document text
    • http://files.saradunhamvo.com/uploads/1/3/1/8/131872185/zovejojepex.pdfIn PDF document text
    • http://files.firenze13.org/uploads/1/3/1/4/131407310/jexelemezaduwode.pdfIn PDF document text
    • http://lezoxa.skytravel124.com/uploads/1/3/0/7/130740000/xevexajafelo.pdfIn PDF document text
    • http://budivi.twistedtangerine.com/uploads/1/3/1/0/131069934/movebogexil-wekaxupakijiwix-lazet.pdfIn PDF document text
    • http://files.epistemy.eu/uploads/1/3/1/3/131398234/gagiza-revinegi-tuxumugovavil.pdfIn PDF document text
    • http://dusorax.canberraplacentaservices.com/uploads/1/3/2/6/132682051/1188872.pdfIn PDF document text
    • https://site-1039641.mozfiles.com/files/1039641/91029300565.pdfIn PDF document text
    • https://site-1042511.mozfiles.com/files/1042511/17506679863.pdfIn PDF document text
    • https://site-1037214.mozfiles.com/files/1037214/fizokewemupuxurelanibunu.pdfIn PDF document text
    • https://site-1036883.mozfiles.com/files/1036883/waxuburerage.pdfIn PDF document text
    • https://site-1048559.mozfiles.com/files/1048559/24636426676.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://cdn.shopify.com/s/files/1/0485/9641/8720/files/kinh_hoa_binh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8130/9083/files/10_person_tent_coleman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6073/9752/files/cake_mania_3_download.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_off0000618e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618E 5016 bytes
SHA-256: 628c94b87889d0162850b006a60de3d1e4b8cc2d39e497e0c7b7cfc61725f71a
font_01_sfnt_off0000728f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x728F 10156 bytes
SHA-256: 566d20e28d004579cf7e234c7cc128a015045690a2fc91026681efc303d7a89f
font_02_sfnt_off00009549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9549 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3