Malicious PDF — malware analysis report

Static analysis result for SHA-256 86dfcf20e0a00ace…

MALICIOUS

PDF

81.6 KB Created: 2021-04-05 18:08:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2ee6165e68e8c2b07af9921ed50dd5c8 SHA-1: aaa111a76d6dad0dc257f01067db08924cc77fe8 SHA-256: 86dfcf20e0a00ace68368b2cca8044617c119e44503ec080f248db2e9d62305b
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. No scripts were extracted, but the presence of an external URI points to a social engineering attack.

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://maypoin.ru/strik?utm_term=diploma+mechanical+engineering+jobs+in+indian+navy PDF link annotation
    • http://viziziziv.mywebcommunity.org/banting_meal_plan_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/zesojesiwi/9mzFjj3/causes_of_focal_epileptiform_discharges.pdfIn PDF document text
    • https://cdn.sqhk.co/nonuripot/PzFgiBE/73683155048.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/licgdgc/jetazimetineroterufaneki.pdfIn PDF document text
    • http://vofufime.mypressonline.com/komoteso.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/gdieihY/windows_media_player_mp3_free_music_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/0IYr0gj/33043364817.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/Dvidgjl/android_nougat_32_bit.pdfIn PDF document text
    • https://cdn.sqhk.co/fujalapevame/jigihjs/duvikipitesimegetedabi.pdfIn PDF document text
    • https://cdn.sqhk.co/tonuviwa/jiXhgjj/abbreviated_electron_configuration_sodium_ion.pdfIn PDF document text
    • https://cdn.sqhk.co/saboretiki/jdiahel/colors_coloring_book_disney.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/dgg3jc5/winking_lizard_menu_peninsula.pdfIn PDF document text
    • https://cdn.sqhk.co/nodujugebi/iJG3oWv/hero_wars_tier_list_2020_mobile.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/numunenoji/fizibawowu.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/beyblade_game_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/ceftriaxona_bula_abl.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/62905351878.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/how_to_identify_diction_in_poetry.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/brookstone_outdoor_speaker_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/analyste_informatique_metier.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/calling_bell_video.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE960 5864 bytes
SHA-256: 17fe67f9af64916b45c02a61abc2b783943f8a704817079038b0ec457619ed7a
font_01_sfnt_off0000fd32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD32 11176 bytes
SHA-256: c963c2a3a704e5870ab31572d4d0a94adc852049e53ff944fa3180734229a8b7
font_02_sfnt_off000122f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122F0 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8

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