Malicious PDF — malware analysis report

Static analysis result for SHA-256 b313d671e7eb4fab…

MALICIOUS

PDF

70.9 KB Created: 2021-03-03 09:30:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 20a4252958bae214c15b2e02dbd4bd46 SHA-1: 2a901842ef292aa90958c4d9a6fad1a8343a6cd2 SHA-256: b313d671e7eb4fab733a8611448f9f62c470e5a449fc00f8582f6770d1b97818
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/award?keyword=lord+of+the+flies+movie+2013+trailer PDF link annotation
    • http://gmetry.online/how_to_record_purchases_on_accountlnit2.pdfIn PDF document text
    • http://nomokesus.sportsontheweb.net/how_to_draw_cartoons_in_photoshop.pdfIn PDF document text
    • http://mx50off.pro/revas04ac6.pdfIn PDF document text
    • http://dutov.org/xibowilusigazafpu26.pdfIn PDF document text
    • https://dexanobibe.weebly.com/uploads/1/3/5/2/135299911/c30b2d4d63fa6f8.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/advanced_dungeons__dragons_players_handbook.pdfIn PDF document text
    • http://lawigimik.iblogger.org/debedubepegixasin.pdfIn PDF document text
    • http://detonicinitalia.website/tipitonidomnpb9.pdfIn PDF document text
    • http://academic-club.ru/color_swipe_maze_logic_games4403q.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/dejumawajijeno.pdfIn PDF document text
    • https://xalekosud.weebly.com/uploads/1/3/5/3/135350534/520454.pdfIn PDF document text
    • https://cdn.sqhk.co/pelotuwew/BZhbaZ5/zativirudaruj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://badamowafe.onlinewebshop.net/what_is_old_country_music.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_off0000d531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD531 5636 bytes
SHA-256: a650c5dbe2d41d8362a0b09262d07a78281ff8121b8aa9b9eefa00d92dd16959
font_01_sfnt_off0000e83d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE83D 10848 bytes
SHA-256: be58c4122ec8b724dbd10f39d8a2dd00bb46bf56dcff7d229d7dec5c9b9e5e7d