Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0bde9fe626e834e…

MALICIOUS

PDF

46.7 KB Created: 2020-10-10 12:52:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c458650a1c9b22e99f42373b79033aca SHA-1: b2ee3805f4c0f31118d8808ea2aa9a7e406d434d SHA-256: b0bde9fe626e834ea304c3f21fa4d684a61336b279077039379ce9de5b8430b8
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/strik?keyword=volkswagen+emission+scandal In PDF document text
    • http://files.aurum-et-argentum.net/uploads/1/3/0/8/130874204/nanamar.pdfIn PDF document text
    • http://mopiluta.designbyalyssamarie.ca/uploads/1/3/1/6/131606027/letexix.pdfIn PDF document text
    • http://files.aletalederwasch.com.au/uploads/1/3/2/7/132741476/kofuponinid.pdfIn PDF document text
    • http://sojuburim.somethingblueresale.com/uploads/1/3/1/3/131398547/7322424.pdfIn PDF document text
    • https://site-1037178.mozfiles.com/files/1037178/99401882024.pdfIn PDF document text
    • https://site-1040082.mozfiles.com/files/1040082/30469685928.pdfIn PDF document text
    • https://site-1038830.mozfiles.com/files/1038830/gatumusobumevipapo.pdfIn PDF document text
    • https://site-1040990.mozfiles.com/files/1040990/venel.pdfIn PDF document text
    • https://site-1043471.mozfiles.com/files/1043471/xinog.pdfIn PDF document text
    • https://site-1040620.mozfiles.com/files/1040620/7925794212.pdfIn PDF document text
    • https://site-1038343.mozfiles.com/files/1038343/sudiku.pdfIn PDF document text
    • https://site-1048190.mozfiles.com/files/1048190/reposajil.pdfIn PDF document text
    • http://files.wingspan-yoga.com/uploads/1/3/0/7/130739616/vuxibezafikurotu.pdfIn PDF document text
    • http://files.cpsschoolcounseling.com/uploads/1/3/2/6/132695519/311876.pdfIn PDF document text
    • http://tizilozes.stincrowvoden.com/uploads/1/3/0/9/130969280/zagirajukas.pdfIn PDF document text
    • http://files.ioliteraryjournal.com/uploads/1/3/0/7/130738805/f3b300ae7d7c44c.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
    • 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_off00006a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7C 4992 bytes
SHA-256: ef6a84c902597786e83a7af991d199ec9fded2fca62d6d995748a794435ef804
font_01_sfnt_off00007b6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6A 10496 bytes
SHA-256: fc4a4b1a3105e6b399a1a5db6133db4c1a62de5b585149ec41453885fb9025b7
font_02_sfnt_off00009f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F4E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176