Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b74624465b0cba…

MALICIOUS

PDF

43.2 KB Created: 2020-11-07 22:29:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 185ab61fd823fb4e05a7cf3ef190bd05 SHA-1: cf02c6d679199d3da344b232ce8c4208f1f1a4b3 SHA-256: 72b74624465b0cba802185d7889218b0bf3ec5f3a8622a2d7eafd4ee13f5f63c
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://traffking.ru/wb?keyword=physical%20science%20chapter%208%20review%20answers In PDF document text
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/1155e7d2e1e.pdfIn PDF document text
    • https://vadurijale.weebly.com/uploads/1/3/4/5/134590900/gukopexis.pdfIn PDF document text
    • https://kifisiwa.weebly.com/uploads/1/3/4/2/134266158/a1308378.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/495fc3b4-e5a4-49c1-a77e-3874a734d4c8/zewavajug.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/case_study_research_example.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/infinitely_many_solutions_sat.pdfIn PDF document text
    • https://vuxeginup.files.wordpress.com/2020/11/43030790395.pdfIn PDF document text
    • https://raxusurer.files.wordpress.com/2020/11/vespa_px_125_haynes_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/saxon_algebra_2_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79689687-47b3-4221-9ab0-dfe67b919223/baletuzirajowakevobim.pdfIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/68091325827.pdfIn PDF document text
    • https://wotenopofe.files.wordpress.com/2020/11/budixaw.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_off00006e19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E19 5468 bytes
SHA-256: 2310dcb867cce042b88c52746ff23991abd0fbdbae8cd46cc700c2962047307e
font_01_sfnt_off000080cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80CC 9416 bytes
SHA-256: 7b12d642d7936632a32156b8f8f60c577747fa4ae6d7c91287882475cd7fd4e8