Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed8d3ee39b93c94d…

MALICIOUS

PDF

42.6 KB Created: 2020-10-07 08:56:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e9d3859f54baabbb2e83a35fc9f549d9 SHA-1: be3b1b73b4cbc11a3ad58040b82c53d3857c1bfc SHA-256: ed8d3ee39b93c94dd0de03b2c2909d4124928d9990834d663eeef61dd80fee33
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=aile+%25C3%25BCzerinde+kristal+meth+etkileri In PDF document text
    • https://site-1038958.mozfiles.com/files/1038958/78805051171.pdfIn PDF document text
    • https://site-1043033.mozfiles.com/files/1043033/gemososafaponofekeguneg.pdfIn PDF document text
    • https://site-1036996.mozfiles.com/files/1036996/68761169530.pdfIn PDF document text
    • http://files.winealongthe101.com/uploads/1/3/1/4/131453484/97c11683.pdfIn PDF document text
    • https://site-1036996.mozfiles.com/files/1036996/8466378885.pdfIn PDF document text
    • https://site-1036991.mozfiles.com/files/1036991/lobenut.pdfIn PDF document text
    • https://site-1039270.mozfiles.com/files/1039270/66104649496.pdfIn PDF document text
    • https://site-1036861.mozfiles.com/files/1036861/48252701525.pdfIn PDF document text
    • https://site-1039253.mozfiles.com/files/1039253/21422398153.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/0aff0f84-4949-411b-9a04-4710daa1b8f9/lijoboloxujeveg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/209438c1-4bae-4381-97bd-a52d493d89cb/39397226537.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_off0000663a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x663A 5288 bytes
SHA-256: 1b1d560882e4c71d9a37ad5633343d1c0c034c9626bf80acbbbc7b7d8741bdf7
font_01_sfnt_off000077d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D7 11428 bytes
SHA-256: f1633463ab8062712df947c8fa20beecb762c6d2be9e2ea100c1c0c549a41892