Malicious PDF — malware analysis report

Static analysis result for SHA-256 089b46e3ed7622dc…

MALICIOUS

PDF

64.2 KB Created: 2021-02-10 15:54:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 126508166067ef1ea58ea83f00e91ece SHA-1: e609311ac5284172a1731e0cc34e1587292c842c SHA-256: 089b46e3ed7622dc1e67ae083f4f31c220b67abe5c5f8a67d0c50d7f7a58dec3
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that is designed to trick users into downloading software. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains references to 'Piriform ccleaner for iphone' and 'wkhtmltopdf', suggesting a lure for software downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wb?keyword=piriform%20ccleaner%20for%20iphone PDF link annotation
    • http://xsafak.com/bakugan_battle_brawlers_ps3_gamelnb3z.pdfIn PDF document text
    • http://mscredit.info/zilizatozoslzqm.pdfIn PDF document text
    • https://cdn.sqhk.co/mepapogivoma/ihvs3Mb/best_random_video_chat_apps_for_android.pdfIn PDF document text
    • http://tortomsk.ru/babybjorn_one_air_manualfd0lz.pdfIn PDF document text
    • http://teaapple.space/idle_car_tycoon_money_clicker_adventure_mod_apkwbnwb.pdfIn PDF document text
    • http://maturibcgj.space/981490797027cbi.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/dejolavubukugeb/free_illustrator_templates_brochure.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/inter_tel_axxess_software.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/50227446069.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/avon_online_katalog_indir.pdfIn PDF document text
    • https://s3.amazonaws.com/gusule/arya_movie_music_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/dovawikupukenapiwawabe.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/15491168443.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/vezolijekeronuvabidodaza.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/vedozajeg.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/crash_bandicoot_gba_rom.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/family_planning_ppt_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/xanagetenixuru.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/pemixamajuti.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/connecticut_dmv_form_h13b.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_off0000c207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC207 5080 bytes
SHA-256: 2c9680a742234ceb80005b4d9623c443000b4758a6bdf809b2cade5d58ab8aaf
font_01_sfnt_off0000d325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD325 9612 bytes
SHA-256: 7a6a2ae68da4a719695008c2274dff1bec08d11a6c1a9ee1c4eeea0a174d0e95

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