Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1f736526cfd28ea…

MALICIOUS

PDF

42.4 KB Created: 2020-09-30 04:23:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 488210208e4b6ea1a83bfb721f569978 SHA-1: 3a4ae67de1a76d3d2db399dacf47de34493d61e3 SHA-256: f1f736526cfd28ea7e95a6660f8923bc8e85dac91e9e3a76cb16ce7c18a701d7
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://cctraff.ru/strik?keyword=aladdin+story+book+pdf+in+hindi In PDF document text
    • https://site-1036791.mozfiles.com/files/1036791/ranepa.pdfIn PDF document text
    • https://site-1037157.mozfiles.com/files/1037157/77926273501.pdfIn PDF document text
    • https://site-1037886.mozfiles.com/files/1037886/59089761334.pdfIn PDF document text
    • https://site-1036957.mozfiles.com/files/1036957/pugifi.pdfIn PDF document text
    • https://site-1037175.mozfiles.com/files/1037175/90223209981.pdfIn PDF document text
    • http://files.drlendevilliers.com/uploads/1/3/1/3/131380292/5075395.pdfIn PDF document text
    • http://tepip.k-sportsmassage.com/uploads/1/3/2/6/132681579/nilavewasokupi-pimetuwujusap-fasadewa-belemenojaxam.pdfIn PDF document text
    • http://files.colinleevesview.com/uploads/1/3/1/4/131438667/10ce2f6d6c48316.pdfIn PDF document text
    • http://files.karldepaepe.com/uploads/1/3/1/4/131437233/xobimixanozu.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/674e7185-09e2-4a71-839d-e1ebfa0f40ad/31574534578.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b251285-6a96-41cc-a366-60889ec3b765/71264286400.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96032599-9416-4c97-acd9-a3cfcbe3dad8/30722174151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58598d72-e2f8-4089-b802-8c8af666c5bd/detokuzukiginif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21572442-484d-402c-b43b-c48c486df924/jezabizozirokuwazegemib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4637f616-e170-460a-a4aa-1421041e642f/98962604249.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0f6fbca-c837-4ed3-bb93-58e8bf9b32fb/62756068697.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_off000066c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C3 5424 bytes
SHA-256: 2d0f4d57dce12a4157d13ff48486ac6325e2547c979561c34106572401c9dc4b
font_01_sfnt_off00007932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7932 10288 bytes
SHA-256: 168d1e76e896426e16ca1a3fc87abf457279a76ed1870e06ec5c35261f8489e8

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