Malicious PDF — malware analysis report

Static analysis result for SHA-256 e64b90be7ce67613…

MALICIOUS

PDF

44.1 KB Created: 2020-10-13 18:42:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a2a8abce8b202ba9802adf8938cf9a86 SHA-1: bbafec708caa207f9c53ee85e43be7540288ce9a SHA-256: e64b90be7ce6761319664d875e3ff06d11b1ca5e1fb1583cc2cbf956725b10d0
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://gettraff.ru/strik?keyword=software+and+hardware+requirements+for+android+studio In PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/8347111.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/mukobuf.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/vepulakanug.pdfIn PDF document text
    • https://site-1039380.mozfiles.com/files/1039380/34513416963.pdfIn PDF document text
    • https://site-1036675.mozfiles.com/files/1036675/solux.pdfIn PDF document text
    • https://site-1040884.mozfiles.com/files/1040884/77092049516.pdfIn PDF document text
    • https://site-1038582.mozfiles.com/files/1038582/newom.pdfIn PDF document text
    • https://site-1036692.mozfiles.com/files/1036692/50179925360.pdfIn PDF document text
    • https://site-1039280.mozfiles.com/files/1039280/616577591.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6047/3241/files/happy_birthday_soul_sister_images.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9090/1144/files/avakin_life_hack_no_human_verification.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_off00006eb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB2 5436 bytes
SHA-256: 2957b7509233af44aec3d6a5e5b7763dd5684b1d745189ae8dd55f8d223cfdb7
font_01_sfnt_off00008102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8102 10064 bytes
SHA-256: 2277635f223677aff20348883af8ac9909a5346a7fc44ed9eae6db3471851b4a