Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc269ac9d683d68e…

MALICIOUS

PDF

37.1 KB Created: 2020-10-07 00:08:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 6180764211d304a1701b71eb11433247 SHA-1: d77219b33a6234cfa05ad8080d6c4bfc33512f11 SHA-256: cc269ac9d683d68e0db90ef2c600075b30bd306125e270ad06296ffc63626453
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/pify?keyword=allison+transmission+codes In PDF document text
    • http://files.magiqatlas.com/uploads/1/3/0/7/130739265/zowadure_dimireno.pdfIn PDF document text
    • http://files.gidgetslilstore.net/uploads/1/3/1/6/131637190/zefaselobukok.pdfIn PDF document text
    • http://medane.mrsherrow.com/uploads/1/3/0/7/130739124/9797753.pdfIn PDF document text
    • http://pukonasas.vinoetamicis.com/uploads/1/3/1/3/131380868/7823911.pdfIn PDF document text
    • http://files.sweetavenuephotographyblog.com/uploads/1/3/1/8/131856112/5936769.pdfIn PDF document text
    • http://files.latinoartandfashion.com/uploads/1/3/2/6/132682607/noforakofokej.pdfIn PDF document text
    • http://files.envirolum.com/uploads/1/3/0/7/130738812/timugezetata_simegat_papamuwinezo_depepolujelivez.pdfIn PDF document text
    • http://rakujugi.makingmathsmagic.com/uploads/1/3/0/7/130739393/bexabub.pdfIn PDF document text
    • http://zoxur.epicrobotics.co.uk/uploads/1/3/1/8/131856669/6407287.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00005495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5495 5072 bytes
SHA-256: d420b10adb4ac663ef19569034e8a0738e23dc0b1f58390d5702eb9f1deb5384
font_01_sfnt_off000065ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BA 10128 bytes
SHA-256: 8563e3475a7ae7a7b61715ad8e9b71e40398c602bd499e1e6762b8ffc7b8bcfa