Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f7052cce35a003…

MALICIOUS

PDF

78.2 KB Created: 2021-03-13 22:14:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0f7a7179ad8105d7e5f2c039fac6f531 SHA-1: 1ae061e9466e27750ae2d3d6c4bc4ba3b96ed42d SHA-256: 34f7052cce35a003a39f55389c249004010016d91b45e7fcabce68c8adaa1015
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'mini dv camcorder ebay kleinanzeigen', suggesting a lure to trick users into clicking the embedded malicious URL. The primary IOC is the URL pointing to kuzutuzo.ru, which is likely used to host a secondary payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://kuzutuzo.ru/strik?utm_term=mini+dv+camcorder+ebay+kleinanzeigen PDF link annotation
    • http://wapividazofar.scienceontheweb.net/rubedotisugepapapamaf.pdfIn PDF document text
    • https://cdn.sqhk.co/joziroluxu/hji7ihl/among_us_mod_menu_always_imposter_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/Tgcgghg/city_racing_bike_simulator_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/silutoge/4geONgd/suzuteziz.pdfIn PDF document text
    • http://kanaxade.mygamesonline.org/best_compact_stereo_speakers_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/vekosozob/gfLxdja/nosopaxasedutumixop.pdfIn PDF document text
    • https://cdn.sqhk.co/bevoletef/JShjoDS/83856074721.pdfIn PDF document text
    • https://cdn.sqhk.co/jomenuluz/iihiehh/xitibajegimopolesox.pdfIn PDF document text
    • https://cdn.sqhk.co/koletexun/ejhElAD/magic_rampage_secret_areas_1-_9.pdfIn PDF document text
    • http://lebepufu.mypressonline.com/what_kind_of_oil_does_a_2007_toyota_yaris_take.pdfIn PDF document text
    • https://cdn.sqhk.co/kedilexele/Xhcjhjj/fudegowotasijevexeriwuvam.pdfIn PDF document text
    • https://cdn.sqhk.co/votezevon/Ijhd1gj/minecraft_pocket_edition_lite_app_store.pdfIn PDF document text
    • https://cdn.sqhk.co/kipezipilojo/gjigugi/loner_quotes_albert_einstein.pdfIn PDF document text
    • https://cdn.sqhk.co/wojinagimepu/ihfhjbS/tiny_archers_mod_apk_hack_download.pdfIn PDF document text
    • https://cdn.sqhk.co/womawuxinuge/didicID/67477842967.pdfIn PDF document text
    • https://cdn.sqhk.co/kutajanode/SgevYfp/harvard_business_review_magazine_buy.pdfIn PDF document text
    • https://cdn.sqhk.co/vilonunufuk/hegiYTi/tazovafamixabozalit.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvapolaxaj/VhibhgV/kamokonufizako.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopiroxab/hb5F8MQ/6831950737.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/icufhe8/vatov.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/nowokil/how_to_assemble_a_sole_f80_treadmill.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/adventure_games_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/formal_synonym_for_bombard.pdfIn PDF document text
    • http://bamonoxo.onlinewebshop.net/how_to_get_learners_permit_in_south_carolina.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/amu_b_tech_form_2019_date.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/how_to_write_a_public_relations_campaign_proposal.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_off0000f28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28E 5504 bytes
SHA-256: 9b00b5d7cc2b8eb1406e6558f387b10b56327b4eb2c86578dd5dd11f16ae80f1
font_01_sfnt_off00010557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10557 11404 bytes
SHA-256: adb193caa7a09b3df52236cebf028fdc148191a5624792bd7df8da665ff9d200

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