Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f5fba849e0a7a08…

MALICIOUS

PDF

66.3 KB Created: 2021-02-27 06:58:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1775589939a8959082823ded782ad0fa SHA-1: ae4714b3f6c381e6e9556d0107be828c697ab0a7 SHA-256: 0f5fba849e0a7a089019b899350c39bba6ffa9f2faeeb75ff9ca1998aabdecc3
196 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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://druttle.ru/award?keyword=wing+chun+close+to+me PDF link annotation
    • https://cdn.sqhk.co/xogiwusumo/vwOjcFn/flying_taxi_pokemon_sword_and_shield.pdfIn PDF document text
    • https://cdn.sqhk.co/dofubetu/jgbsibk/download_map_minecraft_pe_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/miraroki/giEjejf/60756621067.pdfIn PDF document text
    • https://gizutiki.weebly.com/uploads/1/3/4/4/134478998/5581835.pdfIn PDF document text
    • https://cdn.sqhk.co/fexejikexew/1vojcgi/99028067589.pdfIn PDF document text
    • https://cdn.sqhk.co/zapusukajev/ji8jfig/old_macdonald_had_a_farm_nursery_rhymes_uk.pdfIn PDF document text
    • https://wunaramalus.weebly.com/uploads/1/3/4/5/134576193/medusa.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/gEZhhdp/funny_interesting_facts_about_earthworms.pdfIn PDF document text
    • https://cdn.sqhk.co/regisanozoxo/jhhsVKd/notum.pdfIn PDF document text
    • https://cdn.sqhk.co/vufebevefo/bHCTOL2/realistic_driving_simulator_online_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wolawatin/32748243482.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/bootstrap_studio_linux.pdfIn PDF document text
    • http://xuwugufufokiti.epizy.com/mabodanidavojola.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/58997587075.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/merchant_of_venice_question_answers_act_5.pdfIn PDF document text
    • http://nisexugolozefa.rf.gd/tamasha_movie_video_song_pagalworld.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_off0000c9c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C4 4920 bytes
SHA-256: e6517c4eb67ce64d495999cb58fa620f31a08c41ff0a628eef86ff1857ae53ed
font_01_sfnt_off0000da77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA77 9952 bytes
SHA-256: 171609a0deef58655fbfd1eec657ef9a0b4c62a3cebef3122d355e8d6a4747d8