Malicious PDF — malware analysis report

Static analysis result for SHA-256 f702be68926dd2b2…

MALICIOUS

PDF

36.3 KB Created: 2020-10-10 13:26:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: db04d6923f3348786ca7e7d29d74a8bb SHA-1: ff031ecbe92aba7015c06cea91a0c087e040a248 SHA-256: f702be68926dd2b2701d3ac26df79faa0e57c65621b93cb7d7b2925c12bb748a
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://cctraff.ru/strik?keyword=o+reilly+auto+parts+thousand+oaks In PDF document text
    • https://site-1036824.mozfiles.com/files/1036824/muwevox.pdfIn PDF document text
    • https://site-1037057.mozfiles.com/files/1037057/51834810972.pdfIn PDF document text
    • https://site-1038384.mozfiles.com/files/1038384/ledosetilaboruxaxonug.pdfIn PDF document text
    • http://files.tracyrobbsegal.com/uploads/1/3/1/8/131856907/xexezeze.pdfIn PDF document text
    • http://files.chezchase.com/uploads/1/3/1/4/131437669/6444895.pdfIn PDF document text
    • http://files.caritas-veveyse.org/uploads/1/3/1/6/131636886/tinitalo.pdfIn PDF document text
    • http://files.medlinartgallery.com/uploads/1/3/0/7/130776326/f36061.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/a8e6bd53-9380-4477-81d1-ac5ebfaa538e/vogigukigotiluzifefira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dd09c9b-4418-4a3e-8094-2a611ff0820b/59907013194.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb6f1b29-d59d-44a9-9442-41e1440ddc69/27575480286.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4a7e8d6-42c5-4fae-bf99-e7fd7f41b959/xositiroso.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_off0000437e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x437E 5240 bytes
SHA-256: 901101f2e455f6b563dd3c52afc3a3024971161699e5ff4bbac0714e913dc86c
font_01_sfnt_off0000553f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x553F 2816 bytes
SHA-256: 760f125a40663399570d5f80f3c048fb06601bbd3d0e15ca328211cd1e9f13ed
font_02_sfnt_off0000614f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x614F 10284 bytes
SHA-256: 2c47c265208f2c5345e45fa6ee200ec56b5501926e837a86abcd785654994a7b