Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e790b160c4491f9…

MALICIOUS

PDF

37.8 KB Created: 2020-10-04 18:05:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: de404b7698c0fe6fbe1e8dd3b997dcb9 SHA-1: 265d1a7c5219ff17aa2b6c181c8a8040d9e3b492 SHA-256: 3e790b160c4491f9002a1eeb40309afae8b72afb6e9a37cff4ec8e23149b7488
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/strik?keyword=ayushman+bharat+application+form+pdf+kannada In PDF document text
    • http://zagipogow.thebeautyofpaint.com/uploads/1/3/1/8/131871721/7cf0812e.pdfIn PDF document text
    • http://files.schulenkoeniz-ads.ch/uploads/1/3/2/7/132712348/1e2f8b36.pdfIn PDF document text
    • http://zibujen.lakeodessaarts.com/uploads/1/3/1/4/131454215/tosivepekivo.pdfIn PDF document text
    • http://files.partnersforequitydevelopment.com/uploads/1/3/0/7/130776484/ximomapegil_lobotifet_dazefeludal.pdfIn PDF document text
    • http://files.napavalleyentertaining.com/uploads/1/3/1/3/131383889/9570106.pdfIn PDF document text
    • http://files.dglivestock.com/uploads/1/3/1/6/131606859/rodogulafumulenupaxu.pdfIn PDF document text
    • http://files.praphitproductions.com/uploads/1/3/1/4/131408168/lipitetokukolano.pdfIn PDF document text
    • https://site-1038634.mozfiles.com/files/1038634/58037238909.pdfIn PDF document text
    • https://site-1037238.mozfiles.com/files/1037238/pemutesetewokedetow.pdfIn PDF document text
    • https://site-1043491.mozfiles.com/files/1043491/89116613060.pdfIn PDF document text
    • https://site-1036881.mozfiles.com/files/1036881/68699973313.pdfIn PDF document text
    • https://site-1039784.mozfiles.com/files/1039784/nemulu.pdfIn PDF document text
    • https://site-1038884.mozfiles.com/files/1038884/pegovulufefowepudatusa.pdfIn PDF document text
    • https://site-1037122.mozfiles.com/files/1037122/juvopu.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_off000052de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52DE 5688 bytes
SHA-256: 2ad522f8284f85c87dc1dbfbf7715d71020b59bfd258bc61d12d32059a7cd5ef
font_01_sfnt_off00006610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6610 10536 bytes
SHA-256: cb8a121085388fe4f21e8efbd252f35c65ffc785f7ca177937b200cab76a0dcd