Malicious PDF — malware analysis report

Static analysis result for SHA-256 44564beb08c4fcaa…

MALICIOUS

PDF

66.6 KB Created: 2021-03-03 05:53:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c673b42e9fb096655c720c251c75b85f SHA-1: 5bc40f3df5b49a8068a98edaeb7320656ef668ea SHA-256: 44564beb08c4fcaafe840f40b157a546b38b21b0f08c119890cb83aa1ce8c2f9
186 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.
  • 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://gimoguvi.ru/award?keyword=al+quran+academy+london+quran+pdf PDF link annotation
    • https://cdn.sqhk.co/javeduner/YMggqgd/idle_knights_mod_apk_1._1._23_download.pdfIn PDF document text
    • https://gunubamevozapub.weebly.com/uploads/1/3/3/9/133997290/gefojakofosubek-rajinanuxeseb-rujegujeriwefez.pdfIn PDF document text
    • https://cdn.sqhk.co/mekurapiw/gdByge0/60791770074.pdfIn PDF document text
    • https://cdn.sqhk.co/rarukaboz/hcZijhh/31279315053.pdfIn PDF document text
    • http://zovolexune.sportsontheweb.net/23549418762.pdfIn PDF document text
    • http://mavpa.fun/78388179594fnoae.pdfIn PDF document text
    • https://cdn.sqhk.co/kujusiru/ezcjajg/bank_job_3d_download.pdfIn PDF document text
    • http://gixodugesu.medianewsonline.com/texobelamaxefefasotoja.pdfIn PDF document text
    • https://cdn.sqhk.co/jekuzedu/MgjjaER/rolling_ball_2_player.pdfIn PDF document text
    • https://cdn.sqhk.co/lexaxemiji/if3hgCw/goal_en_espanol_instagram.pdfIn PDF document text
    • http://fukazab.mywebcommunity.org/singapore_math_kindergarten_review.pdfIn PDF document text
    • https://cdn.sqhk.co/xovepejegosi/kZiiEhd/webtoon_god_of_highschool.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kimawawasero.onlinewebshop.net/jack_reacher_never_go_back_netflix_country.pdfIn PDF document text
    • http://xabudavadeguvo.myartsonline.com/optomcas_personal_statement_example.pdfIn PDF document text
    • http://nujebij.onlinewebshop.net/problemas_de_porcentajes_encadenados_4_eso.pdfIn PDF document text
    • http://lawaxisagiwog.atwebpages.com/22291438621.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_off0000c9af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AF 5340 bytes
SHA-256: ae863948d06f0e4f53b777dee8ed796b4ac7b64c87f650b0ba7fc3fd5295a8d5
font_01_sfnt_off0000dbcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCC 9920 bytes
SHA-256: f6bfb040b5f916dbca52077a8726fb73c3d2819507f1dccd979e79fafe95fd6d