Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d92b2279b9710d1…

MALICIOUS

PDF

58.4 KB Created: 2020-10-07 07:51:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c37f7d92aaffcd867483aa3a1d6b9ed7 SHA-1: def802d5e8a5c73252c6ff327fc86d92ed32f8dd SHA-256: 2d92b2279b9710d1846cbeb735a043a7d252ecc37126d7e3aa8d052fb01a898d
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=kung+fu+panda+movie+free In PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/76561574064.pdfIn PDF document text
    • https://site-1036918.mozfiles.com/files/1036918/32331690925.pdfIn PDF document text
    • https://site-1037920.mozfiles.com/files/1037920/98114903616.pdfIn PDF document text
    • https://site-1036679.mozfiles.com/files/1036679/93616010464.pdfIn PDF document text
    • http://files.gamain.gaflint.org/uploads/1/3/0/8/130874102/6496696.pdfIn PDF document text
    • http://files.medfieldheightspto.com/uploads/1/3/0/7/130740186/nosawobawun_sivinat_mekewafebupagan_luvaremaget.pdfIn PDF document text
    • http://pevorafow.newlondonohio.com/uploads/1/3/2/6/132681542/bb204a9af86.pdfIn PDF document text
    • http://files.giant-construction.com/uploads/1/3/2/6/132681026/kalulekij_muguluxi_vosobokotima_pazusana.pdfIn PDF document text
    • http://files.greatexpectationsknoxville.com/uploads/1/3/1/6/131637240/558e750e54e2410.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4544/9639/files/spartan_health_sciences_university_admission_requirements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0041/3346/files/dolomesapomazinavupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/4395/5098/files/14359459151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3309/0974/files/suite_adobe_2020_windows_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2471/7723/files/37921060906.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/854a50dd-6b57-4b53-8721-28de10c6a0d5/kefokirirefil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17f9c7f0-6b30-4e73-8b75-7ea699a9c964/62069253784.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a7fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7FD 5180 bytes
SHA-256: 107971df1792d25d41ce80405f077240bbad7d00bb27e8534fc17c452330e77d
font_01_sfnt_off0000b9a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9A0 10264 bytes
SHA-256: f3153c4f51e9a3734c4991626345cd3226f60f2e2b8fa85e917594c03937b66f

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