Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb3bb7ba8d2ef9fb…

MALICIOUS

PDF

45.8 KB Created: 2020-10-15 02:36:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 53524e4c9d96e5458550a30cf8739750 SHA-1: e13de59f63ec0693f711c3e43f23459322154a1e SHA-256: bb3bb7ba8d2ef9fb76357143400f076396e829b11524861a6409738273005423
124 Risk Score

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://ggtraff.ru/123?keyword=case+study+structure+pdf In PDF document text
    • https://site-1038455.mozfiles.com/files/1038455/welelijer.pdfIn PDF document text
    • https://site-1037828.mozfiles.com/files/1037828/mudakezidisebipurifolumap.pdfIn PDF document text
    • https://site-1039730.mozfiles.com/files/1039730/jepiwekodafazoli.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368506/normal_5f877a67ac55f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366014/normal_5f87701b8d15d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366047/normal_5f8700d9d6380.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f877b37996b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f877cdd3bdb9.pdfIn PDF document text
    • https://site-1038413.mozfiles.com/files/1038413/83547765987.pdfIn PDF document text
    • https://site-1042832.mozfiles.com/files/1042832/38228569166.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0492/9975/1071/files/62569211800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/7187/3446/files/fudotebujet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4b76df3-642b-47bf-9dba-62d078a39d41/23743790359.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8666e11-ef2e-4a23-8556-5e50b07c9690/97305927380.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dd3bee8-592e-46e4-9be1-a584869f452f/zedanovonewaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fae793f6-08f1-4808-961a-ecc6220affca/fabosafunefusidifi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb9b9686-fe8c-423f-ba72-a7dd80b4e248/39966538818.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d33b64e7-f98e-4593-b391-2f76f0b2d086/62911602247.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A08 4860 bytes
SHA-256: 281e4e46474e95357ea02501785c1fa9b1fc06d7c58d9dfa095bacbdaee8d54e
font_01_sfnt_off00007aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA5 9684 bytes
SHA-256: 40e842cdbd91a664395a76eaedb8998fdce0c942aeee5d9e78ceac9aa3be79ea
font_02_sfnt_off00009bac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BAC 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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