Malicious PDF — malware analysis report

Static analysis result for SHA-256 642e65a939d9b6b5…

MALICIOUS

PDF

71.2 KB Created: 2021-03-11 05:00:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 13b29044e8844b0ec9cfaefd532b5f8c SHA-1: d6f437cd4cdfa8876c723521d8c0dc2935f74883 SHA-256: 642e65a939d9b6b5a3a3c5e266fe080bc33f9285f420c29645f8d9f21655ea15
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://nipisod.ru/wix?keyword=neutrogena+foot+cream PDF link annotation
    • https://kazawiluk.weebly.com/uploads/1/3/5/3/135384823/mulekema-gewovekixapino-tigoxegosi-nezuginukisatom.pdfIn PDF document text
    • https://rigugoxa.weebly.com/uploads/1/3/0/7/130776225/25aedc54f4d11d.pdfIn PDF document text
    • https://cdn.sqhk.co/falupuvevore/piegfGx/cool_diy_wood_project_ideas.pdfIn PDF document text
    • https://zevebijupaxize.weebly.com/uploads/1/3/4/7/134754497/gikemoneluxexuja.pdfIn PDF document text
    • https://cdn.sqhk.co/ninivaxibab/difjbgc/android_box_google_play_services_has_stopped.pdfIn PDF document text
    • https://waxalema.weebly.com/uploads/1/3/4/3/134364729/9985974.pdfIn PDF document text
    • http://tewapakug.22web.org/mufeweguwopefixotofup.pdfIn PDF document text
    • https://cdn.sqhk.co/tawavumazo/hbgigjj/getabedugopolenexoj.pdfIn PDF document text
    • https://vakigosem.weebly.com/uploads/1/3/4/4/134480352/toxuda-gapomobuji-nituxudemitupu-nekobujejujubas.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/pukaridimupo/program_camtasia_studio_8_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/ultimate_blues_backing_tracks_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/for_the_first_time_in_forever_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/davop.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/free_educational_games.pdfIn PDF document text
    • http://gixulomo.rf.gd/trauma_release_exercises_training.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/finite_mathematics_5th_edition_answers.pdfIn PDF document text
    • http://vunowowino.epizy.com/analgesia_and_anesthesia_in_obstetrics.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/gevewigezadexag.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/bubizexexiv.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/hunters_and_props_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/dj_badri_songs_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/android_file_transfer_for_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/dotesugotuxorojuxivawu.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/earth_work_calculation_in_excel.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_off0000da83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA83 4960 bytes
SHA-256: 34d1a41917ca78563ce694629c33fa0a6ef91233a1d4ce1fe51fc27c5dcee060
font_01_sfnt_off0000eb62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB62 10536 bytes
SHA-256: 52ec9e89ece1f8b70eef2c07d654ee43bee07d75a11ba37b2892fae1e0c28453

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