Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b18fca5ad9f6c9f…

MALICIOUS

PDF

48.7 KB Created: 2020-10-03 01:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca0ea4bf7c4904247e804e882e74f940 SHA-1: 1a1b3e096bc91508c4878ca75d8f54d4c4f45216 SHA-256: 0b18fca5ad9f6c9f5f882026486409bf47766b6cc9f8eef658d6ee7628ac4ffa
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The ML classifier also strongly indicates maliciousness. The primary attack pattern involves luring the user to click a link disguised as a free resource, which then leads to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://gettraff.ru/strik?keyword=quimica+inorganica+pdf+libros+gratis In PDF document text
    • http://turuxob.mgss.com/uploads/1/3/0/7/130739344/dabagadogifovodip.pdfIn PDF document text
    • http://karav.karolynecronin.com/uploads/1/3/2/7/132712663/63f43da.pdfIn PDF document text
    • http://rovirozo.omerknoll.com/uploads/1/3/1/0/131069759/57a25e8fc8cf4.pdfIn PDF document text
    • https://site-1040179.mozfiles.com/files/1040179/lipegetodobopo.pdfIn PDF document text
    • https://site-1037245.mozfiles.com/files/1037245/movukekisiweforamaje.pdfIn PDF document text
    • https://site-1036637.mozfiles.com/files/1036637/bizorazexugeziga.pdfIn PDF document text
    • https://site-1039380.mozfiles.com/files/1039380/24604696782.pdfIn PDF document text
    • https://site-1040346.mozfiles.com/files/1040346/janekit.pdfIn PDF document text
    • https://site-1039852.mozfiles.com/files/1039852/zubixinemigajomoseza.pdfIn PDF document text
    • https://site-1036811.mozfiles.com/files/1036811/8593818979.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/1/0438/4263/3890/files/compound_sentence_with_explanatory_statement_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4513/3207/files/60780974406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8361/9232/files/carl_r_rogers_on_becoming_a_person.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_off00007e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E02 5676 bytes
SHA-256: 528c969a5d30154818027ee6b167ce893d25b9aa4a5f0d0dc578b70a8facf275
font_01_sfnt_off0000912f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912F 11288 bytes
SHA-256: 9fc073f32ef67c7550a33bc8299086766bd0a06377616a20e897f14168f8cff6

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