Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b3d58e6f5dfec13…

MALICIOUS

PDF

61.8 KB Created: 2020-10-13 14:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cff149ea19938fd3573bcf2bdb05b036 SHA-1: b57772129203a29a10934f2daf65a66d97a3b1f4 SHA-256: 2b3d58e6f5dfec13595d5145c3ae8755f1d36f4f1c68dd205100c1a5dddfaed6
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=molten+core+guide+deutsch+classic In PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/8767144.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/lixavej_rivutavipulox_vunezikavad_lirumonoguwako.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/3029889.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/caa64.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/jatelu-zukolugaw.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/xelikanotuzifaja.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279037.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/4106527.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/6c4a4545-6b74-4770-b7ba-726bddda3f46/puxopewuliturakutodoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c123c29-c75b-44e8-96c9-4c2185123ad3/xobozubumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17132135-5f76-49fb-aa7d-5ce0abe16379/23433616243.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01ce41fa-a008-4b58-a8fe-b75d52acb302/jetaxamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d98222b-5786-4f62-afd3-b48935924529/85342849820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8458/6903/files/2020_dpt_aic_student_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3366/4922/files/47013993867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1538/7811/files/83587826211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3901/files/fijomupit.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_off0000b493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB493 5208 bytes
SHA-256: e93f32fbd7046d0f16a6faee132f7a5a4e441f5d8cbd97c4ec9b775d7d43e883
font_01_sfnt_off0000c646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC646 10508 bytes
SHA-256: ac3eb8b3edd958b4f979eb1253bbd02f44fbb59209e3dc524a5ab5bc5bb7b975

Open this report in the interactive analyzer, or submit your own file for analysis.