Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec937992ef8dc58…

MALICIOUS

PDF

90.1 KB Created: 2021-04-07 00:23:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2490e1642e126f479424e9cfb762990 SHA-1: df1b03db835ef90baa207a778f71f213b4ea5af5 SHA-256: 9ec937992ef8dc58da11f8cdb037ce4de80ac0b3b0cadec14ca0752f4cae0ba3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URL pointing to 'botokaw.ru', which is likely a phishing lure. The PDF structure and embedded content suggest an attempt to trick users into visiting this external site, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=icao+annex+16+volume+2+pdf
    • https://cdn.sqhk.co/fejukomus/ajgihje/38121608609.pdf
    • http://fuxuxixigu.scienceontheweb.net/analog_and_digital_clock_worksheet.pdf
    • https://cdn.sqhk.co/wojusipi/fihgc4g/global_outbreak_alert_and_response_network_upsc.pdf
    • http://virivuluk.getenjoyment.net/4942111646.pdf
    • https://cdn.sqhk.co/gorubabor/KWnhijc/fezareneneko.pdf
    • http://koxivesuvif.mypressonline.com/72173218177.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sevoga/whirlpool_quiet_partner_2_flashing_lights.pdf
    • https://s3.amazonaws.com/wuvepilamamuse/manabekivuwenaxujujo.pdf
    • http://fotenataxiw.rf.gd/ruturejefo.pdf
    • https://s3.amazonaws.com/pujinit/creature_3d_full_movie_free_hd.pdf
    • https://uploads.strikinglycdn.com/files/dc60987a-1eeb-49df-95dd-14e01dcd1ef0/79462102346.pdf
    • http://miganuvag.myartsonline.com/do_i_need_a_router_with_my_modem.pdf
    • https://s3.amazonaws.com/votawawo/27582335834.pdf
    • http://fomobiwudaz.rf.gd/speculation_tax_bc_online_form.pdf
    • https://s3.amazonaws.com/divelikubapiwaj/latest_english_album_songs_free.pdf
    • http://diwadakerinepix.myartsonline.com/to_be_verbs_list.pdf
    • https://uploads.strikinglycdn.com/files/beccf036-efc2-4999-9f46-3c91058e2231/5078740886.pdf
    • https://s3.amazonaws.com/jezobasit/wogeputonujuwasew.pdf
    • https://s3.amazonaws.com/zobuwubedak/zuxaxedorov.pdf
    • http://fomabobas.epizy.com/mossberg_500_all_purpose_12_gauge_field_shotgun_with_wood_stock.pdf
    • http://tovetetuw.rf.gd/rebipaxureworej.pdf
    • http://pukifuxunejup.epizy.com/86388012811.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001223f.bin
680da2202ee4ebdb42b7499387a525307fce3104ea3dce77bf408cf4ee02a092
pdf-font-stream PDF embedded font (sfnt) at offset 0x1223F 5432 bytes
font_01_sfnt_off000134c7.bin
d7fc7cbb1955cf8a2bd781ee25130b132bee415f9ed8be23df1fbe3d28e2ec6e
pdf-font-stream PDF embedded font (sfnt) at offset 0x134C7 11292 bytes