Malicious PDF — malware analysis report

Static analysis result for SHA-256 a92183cdfc01e340…

MALICIOUS

PDF

34.2 KB Created: 2020-10-11 18:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 8940a49535282b2aa34680d981689300 SHA-1: a9f7530d5a9af6362efc9fcdb79d4041f1aad1fa SHA-256: a92183cdfc01e340a03200af2db1be7b07f87a910c3d637118cfd3b6e35e977d
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://cctraff.ru/strik?keyword=cambio+de+piel+marc+anthony+descargar In PDF document text
    • http://rivot.ridgewaybaseball.com/uploads/1/3/1/8/131856333/nopovepugavenolu.pdfIn PDF document text
    • http://files.centaurscricket.com/uploads/1/3/1/3/131380550/6712612.pdfIn PDF document text
    • http://pamopi.nicolesbadassblog.com/uploads/1/3/1/1/131164250/05b9fc60a7b8f.pdfIn PDF document text
    • http://vizufeg.andthatmeanscomfort.com/uploads/1/3/0/9/130969893/kapibovoxelo.pdfIn PDF document text
    • http://muruwo.aeebeh.net/uploads/1/3/0/8/130813992/xogorinadun_gipomor_pileziroduzisiz_rulafibo.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/0c0c942e-9931-4e70-a6d4-4b4b17e4b15e/3087345994.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc3dbb7b-f054-4f2e-b56a-5af9542585be/bunigiwopefunezitiximo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2199/4648/files/5188105070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/2802/7808/files/burnin_rubber_5_unblocked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6560/4766/files/troy_university_scholarships.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1722/8455/files/rusobusuzivapemugixepize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/8272/1701/files/550_area_code_australia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1287/1576/files/41388235925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2589/8913/files/83426314297.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 6

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_off000046d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46D1 5632 bytes
SHA-256: daa211ef922b2ffdf18a72c0e54548ef9201bf8017d30ff0c816d8ccc150b0b6
font_01_sfnt_off000059ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59CA 10600 bytes
SHA-256: d9ccb585e538cd5de60ddcc05b294f8e943e5c373f51e63d6d84517fa2533038

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