Malicious PDF — malware analysis report

Static analysis result for SHA-256 941d434af73f740b…

MALICIOUS

PDF

58.8 KB Created: 2020-10-12 03:15:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 43785520e9b3d582b61e3f4740e2e456 SHA-1: c5ae59ba815b0cd774326b1c104ccfcb86bad833 SHA-256: 941d434af73f740b8915173c82e2e089b9537df519a02e62f69794632847f97f
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://gettraff.ru/strik?keyword=call+of+duty+advanced+warfare+cheat+codes+xbox+one In PDF document text
    • https://site-1036858.mozfiles.com/files/1036858/96156708177.pdfIn PDF document text
    • http://vaxeli.honesthomeinspector.com/uploads/1/3/1/0/131070197/8dcb1.pdfIn PDF document text
    • http://bezef.shadylanefarm.store/uploads/1/3/0/8/130874631/jirojiwunup.pdfIn PDF document text
    • http://files.thecodicoyote.com/uploads/1/3/0/7/130775818/1ad53b.pdfIn PDF document text
    • https://site-1039610.mozfiles.com/files/1039610/kipovazexaxilewalotep.pdfIn PDF document text
    • https://site-1040329.mozfiles.com/files/1040329/tegikoke.pdfIn PDF document text
    • https://site-1036858.mozfiles.com/files/1036858/4828456164.pdfIn PDF document text
    • https://site-1038794.mozfiles.com/files/1038794/xeridonegemavusorakumug.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/3a50a952-5895-4366-93d4-01a4ce08cc77/lekajavajiloju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f95b4ad1-6f5b-4c5c-9be9-055ccf20461f/76063483588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79685fa1-e992-4476-a48d-c54fbeec437e/28666620134.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c142842-45c1-46fc-b508-a12ed6bd7d64/46902388763.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ba8eea3-4f7c-46e9-9665-9d45bf2e161c/41146466188.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_off0000a775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA775 5476 bytes
SHA-256: bf0ba64297f379541d7d0d374dc4f0e6614260bf9b45b006b650aeec46a076ca
font_01_sfnt_off0000ba2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA2A 10440 bytes
SHA-256: a27b06bac987709e7c34d5ba61dc075bec96f7b554dd215310dc4176856ef656

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