Malicious PDF — malware analysis report

Static analysis result for SHA-256 6169c3ddd56c8213…

MALICIOUS

PDF

41.4 KB Created: 2020-10-10 17:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: f3b033332f11abbd2b759999cdb9d1b6 SHA-1: 56948a9f5ec0132a9059174c8ed3129e22068e40 SHA-256: 6169c3ddd56c8213eb5673ba2209ae3ad66e2658c051565013bf2162c53c7db9
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/pify?keyword=east+charlotte+nissan In PDF document text
    • https://site-1038799.mozfiles.com/files/1038799/nesabogazozop.pdfIn PDF document text
    • https://site-1040399.mozfiles.com/files/1040399/5814840317.pdfIn PDF document text
    • https://site-1042013.mozfiles.com/files/1042013/kufawobizudasozisefi.pdfIn PDF document text
    • http://pavefivik.momentcapture.net/uploads/1/3/2/6/132695306/ninalarojeporo_sowavopumukaka.pdfIn PDF document text
    • http://vagivibo.stannartsandculturalcenter.org/uploads/1/3/1/3/131397997/julod.pdfIn PDF document text
    • http://lomovi.coyotemusicstudio.com/uploads/1/3/1/3/131380160/0f9ae72fe03e3a9.pdfIn PDF document text
    • http://files.lion-fabrications.co.uk/uploads/1/3/2/6/132682039/jaxinanupig-wozat.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/ae476de6-663f-4f6d-8884-0ce9155c275f/63735023390.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56cdba3c-5189-4124-b1d0-39d978952069/62306835473.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a17cfa5e-539b-49a8-b6b1-aced6140d2ed/xapotidutiravuveterok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcddbd68-271e-45da-8371-29e880fbc5f3/sawepeworodavamizidoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e650fe46-e94b-4153-83a1-2ce4dd024b52/renozupogazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76cb775a-3c71-40f9-a94e-beebb00af058/juzejikokufonip.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_off00006660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6660 4844 bytes
SHA-256: 962863978b081a5fb8c2dbf78ac8c442b05f67fb588de0a9bbce31f0b2317989
font_01_sfnt_off000076c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76C4 10184 bytes
SHA-256: 5392fcd905b0b17a4b653a6dd673ca1bde147b739277b265c42eb702f88848e7