Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c24b218a8be5b65…

MALICIOUS

PDF

40.8 KB Created: 2020-09-29 19:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 508eb5362735edb5bcf224d901472311 SHA-1: 3583bfb6cb7b8138a7cd7169e003dc324842a5a7 SHA-256: 9c24b218a8be5b65188f4bf0378323a2308da449dd4fdfda9d47d89ba1046ebe
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with multiple links pointing to mozfiles.com and other domains, ultimately redirecting to malicious infrastructure at cctraff.ru. This indicates a phishing or credential harvesting attempt by luring users to download seemingly legitimate documents that instead lead to malicious sites. No scripts were extracted, limiting the analysis of direct payload execution.

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=qualities+of+effective+communication+pdf In PDF document text
    • https://site-1036965.mozfiles.com/files/1036965/16141374819.pdfIn PDF document text
    • https://site-1037202.mozfiles.com/files/1037202/95255746211.pdfIn PDF document text
    • https://site-1036819.mozfiles.com/files/1036819/dasetowodomirozam.pdfIn PDF document text
    • https://site-1037203.mozfiles.com/files/1037203/devovexozukexalegoxug.pdfIn PDF document text
    • https://site-1036898.mozfiles.com/files/1036898/10904777362.pdfIn PDF document text
    • http://files.id-alzo.com/uploads/1/3/1/8/131872015/xolofov.pdfIn PDF document text
    • http://files.lauriedigiulio.com/uploads/1/3/1/4/131454791/vawek.pdfIn PDF document text
    • http://files.budavet.net/uploads/1/3/0/7/130738929/4983437.pdfIn PDF document text
    • http://padurotut.incubator143.org/uploads/1/3/1/3/131379394/4068087.pdfIn PDF document text
    • https://site-1037085.mozfiles.com/files/1037085/53917637795.pdfIn PDF document text
    • https://site-1037010.mozfiles.com/files/1037010/rowozowizodotaxigavamo.pdfIn PDF document text
    • https://site-1037018.mozfiles.com/files/1037018/juwesowepawagur.pdfIn PDF document text
    • https://site-1037101.mozfiles.com/files/1037101/tuzez.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/1/0433/7863/9013/files/wings_of_fire_bangla_free_download.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_off00005f8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8E 5324 bytes
SHA-256: 6f179ed68edb7fbf0cab0ec3f17c344db1e51e4ca8af3e2110ba77ccb60456cc
font_01_sfnt_off000071a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A6 10732 bytes
SHA-256: c22f35c0d139d840cb6eb621e5b6a197b87e753880d2981c73eedb70e10dbc10

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