Malicious PDF — malware analysis report

Static analysis result for SHA-256 9952cb6bf452e16e…

MALICIOUS

PDF

40.8 KB Created: 2020-10-04 22:38:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 50a49543152d54aab18b9551f0ee1dc7 SHA-1: b7e6344396a70169cbbc4e3cb1335d536f9cfe03 SHA-256: 9952cb6bf452e16e0f2fa2a313c8f54c82ac7a7402197713d7e985191b9c2336
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/pify?keyword=demi+lovato+es+latina In PDF document text
    • https://site-1037055.mozfiles.com/files/1037055/75673521778.pdfIn PDF document text
    • https://site-1042738.mozfiles.com/files/1042738/97038582681.pdfIn PDF document text
    • https://site-1037111.mozfiles.com/files/1037111/tawanazimazi.pdfIn PDF document text
    • https://site-1037124.mozfiles.com/files/1037124/98983789269.pdfIn PDF document text
    • http://files.bishopkemperschool.org/uploads/1/3/1/0/131070520/xawaxexenul_lusojo.pdfIn PDF document text
    • http://rezoxotes.jenwillsea.com/uploads/1/3/0/9/130969754/sekovixafekasipo.pdfIn PDF document text
    • http://dujanusor.holisticways.com.au/uploads/1/3/0/7/130738681/rezefarog.pdfIn PDF document text
    • http://files.simplyinfinitephotography.com/uploads/1/3/1/4/131438216/9126215.pdfIn PDF document text
    • https://site-1043538.mozfiles.com/files/1043538/jazediwekabu.pdfIn PDF document text
    • https://site-1038321.mozfiles.com/files/1038321/latomiriwuvuvaxagolojorek.pdfIn PDF document text
    • https://site-1037265.mozfiles.com/files/1037265/21186754666.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_off000063cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CF 4792 bytes
SHA-256: 20134aa497bc01ce3ecacd5996a22014ec8091c5e747f6692e81fbc4b6d1f2e1
font_01_sfnt_off00007414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7414 10260 bytes
SHA-256: 970d3010fc97ad6e2d6bc20da6ee94c446f5ec972c2ffc0b97ad63372c1a1035