Malicious PDF — malware analysis report

Static analysis result for SHA-256 73de06a3c28e5e1d…

MALICIOUS

PDF

65.9 KB Created: 2021-02-06 14:09:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f8e116e45751ae0f0015163281ac36ed SHA-1: 6ddfe2b9f1cb1f6284e0cc6a519dd6326513feea SHA-256: 73de06a3c28e5e1d95ee95ffce27d484e3ebc9b79df4754484b1fdb28c5bb98e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/wb?keyword=new%20amsterdam%20episode%20guide%20imdb PDF link annotation
    • http://pusosokus.iblogger.org/technological_determinism_definition.pdfIn PDF document text
    • http://morikulifitoj.22web.org/8024151121.pdfIn PDF document text
    • http://securityofusersdevicesonline.site/15912199021medyk.pdfIn PDF document text
    • http://faceskinagainbeauty.xyz/jeviluwejimajisixemaxijump9hl.pdfIn PDF document text
    • http://mon-cmbretagne.com/nuwadorunakolokeguxupuu0mzr.pdfIn PDF document text
    • http://bridgecommerce.com/fairy_tale_shaman_sheet_musicx0avm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376599/normal_6007f15044087.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452381/normal_5fcad11cd9879.pdfIn PDF document text
    • https://kaxagigunuji.weebly.com/uploads/1/3/1/3/131383746/nokowedesurutof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dojopugoput.epizy.com/dodarikatiwutepobukibi.pdfIn PDF document text
    • http://jizuwugi.rf.gd/information_report_examples_year_5.pdfIn PDF document text
    • http://pawekixezad.epizy.com/galactic_civilizations_2_espionage_guide.pdfIn PDF document text
    • http://dogirajuwuxo.epizy.com/kaabil_full_movie_720p_hevc.pdfIn PDF document text
    • http://totiwofosu.epizy.com/basic_geometric_constructions_worksheet.pdfIn PDF document text
    • http://ruleruz.epizy.com/xaketo.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_off0000c17b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC17B 5448 bytes
SHA-256: 8d56b42cfb2be837e77f57801f02f71f95f35e6701bfbe7f494bdb06148a5ebe
font_01_sfnt_off0000d3f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F9 10944 bytes
SHA-256: 1fbbb8bc096eba21a2c31c8ce0e2942c1c865ae9729a97631f4e1b4d9d590f70