Malicious PDF — malware analysis report

Static analysis result for SHA-256 35c4fcabfc4f1d61…

MALICIOUS

PDF

78.2 KB Created: 2021-02-28 17:44:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 13098f404a00bb357a611820869ec85b SHA-1: 5a6cb2245363535c399fdc67b6353493ed4b64a2 SHA-256: 35c4fcabfc4f1d612ab97d378fdf73c905492893e08931368b5f2f647a9764ca
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely to host a phishing page or download further malware. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The file's structure and embedded URI are consistent with social engineering tactics to trick users into visiting a compromised site.

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://mezovuduw.ru/wix?keyword=kool+vue+mirrors+installation+instructions PDF link annotation
    • https://cdn.sqhk.co/wusezofetib/qwigTmJ/xigegido.pdfIn PDF document text
    • https://cdn.sqhk.co/pesasotiro/gp9lGhb/20415288978.pdfIn PDF document text
    • https://cdn.sqhk.co/noloxunipe/ha05Rhg/life_after_death_album.pdfIn PDF document text
    • https://cdn.sqhk.co/dokamaruxif/k6nfhbw/homeschool_lesson_planner_printable.pdfIn PDF document text
    • https://cdn.sqhk.co/zewawugawa/jcidGjc/22563309985.pdfIn PDF document text
    • https://cdn.sqhk.co/vajirasavuz/i1WUjc9/best_iphone_sea_battle_game.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/Lbhcjfi/aurum_blade_ex_mod_apk_unlimited_gem.pdfIn PDF document text
    • https://cdn.sqhk.co/fozuwasixeja/ajagiRt/arena_football_tryouts_atlanta.pdfIn PDF document text
    • https://cdn.sqhk.co/tesolivu/thhjhaO/monaropegopukati.pdfIn PDF document text
    • https://cdn.sqhk.co/kenipafitu/geJhggd/smart_class_content_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xeposetuge/bQjghii/hi-_fi_music_player_jp_morgan.pdfIn PDF document text
    • https://cdn.sqhk.co/zezegawutogu/Uf8jjSi/logo_de_royal_caribbean_international.pdfIn PDF document text
    • https://cdn.sqhk.co/dewozoju/ih2ihjQ/stick_soccer_2_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/wejawujagi/gdERohe/ant_farm_characters_talents.pdfIn PDF document text
    • https://cdn.sqhk.co/bozogekeji/ujixnhb/6894942177.pdfIn PDF document text
    • https://cdn.sqhk.co/zopimoforaja/da8fpoX/marketplace_nyc_soho.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/kovozenamofox/lopovavasalafusome.pdfIn PDF document text
    • http://naxolop.rf.gd/robigelijujin.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/intro_to_color_theory_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/good_introduction_for_report_writing.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F3 4972 bytes
SHA-256: 49a6c7255477e635c07a0d9097f77145c9c12e50dc368f6d2524441c5a96d200
font_01_sfnt_off0000f9c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C4 3412 bytes
SHA-256: 85e0b548c6f4b76c12a1ff0daa7f418c80b2aec9997843f91f71e0ff57b26111
font_02_sfnt_off00010731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10731 10368 bytes
SHA-256: dc0519117c25d9e750ca34b3596866bbfdaaa6cf05b14bb49f4e5249e9b939a9

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