Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0986566a2d53e2e…

MALICIOUS

PDF

39.1 KB Created: 2020-10-30 05:27:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c94cd59a4da6ef873f63cdb194047373 SHA-1: 390bc351e06b143508b9b36ef35e8a8fe4f29826 SHA-256: c0986566a2d53e2ef2a821c389841cd9ddb797b06bba77721ce36fb1268f7862
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?keyword=manual+for+samsung+front+load+washer In PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/xijebufupuruxux_xobufal_vavibur_rezuraxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f8a305a91d62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370767/normal_5f88948867d9c.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/waxinu-ragakagibemuko.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/lokujevu.pdfIn PDF document text
    • https://jaxirifaru.weebly.com/uploads/1/3/4/5/134500995/2392184.pdfIn PDF document text
    • https://lififamofupuge.weebly.com/uploads/1/3/4/3/134317858/vorazixe_tetixejovora.pdfIn PDF document text
    • https://wenadexedodoren.weebly.com/uploads/1/3/4/3/134322255/dubarogat.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000057e9.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000057e9.bin)
    • https://uploads.strikinglycdn.com/files/a07574de-7733-4c5f-a848-4e1c12e8bf4a/algebra_nation_workbook_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e267eca8-7b24-410f-8f0e-6a730134ad23/bagelazoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9709ceca-9ef1-47d1-84b6-65902da97bcc/58865446546.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/157e9291-a735-40a8-ae0b-51657299a050/14254280125.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/vidarigepudajaberitikos.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 extracted file (font_00_sfnt_off000057e9.bin)

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_off000057e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57E9 5420 bytes
SHA-256: 5449a65d3701cb11c780dd9da9e6013f9468b3a0fe559f7b96d313838cadaf72
font_01_sfnt_off00006a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4B 10940 bytes
SHA-256: d150c60d8bda2e8cabe105d4a589a121039552b5e0f3dba33cbc63b78ce5885b

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