Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa76aa42c8fbdd71…

MALICIOUS

PDF

41.2 KB Created: 2020-10-10 21:01:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 61d22d658cfece6e804f30919280068e SHA-1: fb356e5ab18348ea9e906d7fc2e044e701d10b8c SHA-256: fa76aa42c8fbdd718ed05aa4c4257274a1ffa1e3f87d65dc8ca54f2f100ef9ee
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://cctraff.ru/strik?keyword=cheval+country+club In PDF document text
    • https://site-1036991.mozfiles.com/files/1036991/jumibe.pdfIn PDF document text
    • https://site-1040213.mozfiles.com/files/1040213/rakunu.pdfIn PDF document text
    • https://site-1043381.mozfiles.com/files/1043381/rosizama.pdfIn PDF document text
    • http://files.dkg-gammachi.org/uploads/1/3/0/9/130969385/wozijurojolixufube.pdfIn PDF document text
    • https://site-1037916.mozfiles.com/files/1037916/tabuvewu.pdfIn PDF document text
    • https://site-1043258.mozfiles.com/files/1043258/vewefatefupupis.pdfIn PDF document text
    • https://site-1043177.mozfiles.com/files/1043177/61765078825.pdfIn PDF document text
    • https://site-1042879.mozfiles.com/files/1042879/kiruxe.pdfIn PDF document text
    • https://site-1037094.mozfiles.com/files/1037094/47735794404.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/1/0483/5291/9703/files/pokulifabadijid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1671/5429/files/kegazenemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/9752/1047/files/ftb_infinity_evolved_starter_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9602/4259/files/lowikituzovuxinafum.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5704 4868 bytes
SHA-256: e8f5e1805af5575e20a1a863a57025b9718b209e72ae50db8fb85de9d3754fef
font_01_sfnt_off00006793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6793 10204 bytes
SHA-256: 868dd845d2948504cf35220cfc4b5fce269c40884028e91237ea650ba8ee6aed
font_02_sfnt_off00008a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7B 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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