Malicious PDF — malware analysis report

Static analysis result for SHA-256 a41a03dbb87a4b9e…

MALICIOUS

PDF

73.8 KB Created: 2021-02-26 13:45:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 95f50a12229fc275f632fcc9af496ee4 SHA-1: a5a14b362d820a01b938d3b112cbf2eb4ace1584 SHA-256: a41a03dbb87a4b9e5c9ab042e2108f0895fb72c44254ac8f68fe96830f9717bb
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/award?keyword=yamaha+01v+manual+espa%25C3%25B1ol PDF link annotation
    • http://beviluxenumiliv.mywebcommunity.org/como_crear_un_de_varios_documentos_word.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/gifiihc/26178270895.pdfIn PDF document text
    • http://1ux.site/1084440971773epj.pdfIn PDF document text
    • http://shopyou.online/disneyland_adventure_park_map2ewbl.pdfIn PDF document text
    • http://lezigovedavide.getenjoyment.net/what_time_does_blue_coat_school_start.pdfIn PDF document text
    • http://stonersfranchise.com/wilderness_survival_merit_badge_shelterg795c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://didigenekogama.epizy.com/england_netball_beep_test_form.pdfIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/whats_the_purpose_of_the_worm_in_tequila.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/dawn_of_war_ultimate_apocalypse_tyranids_guide.pdfIn PDF document text
    • http://kamegil.epizy.com/gujuzarosox.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/appointment_book_templates.pdfIn PDF document text
    • http://jujabezemaluwe.rf.gd/63936012208.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/midpoints_and_bisectors_worksheet_answers.pdfIn PDF document text
    • http://zotoputoxo.rf.gd/iso_to_usb_bootable_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/libro_espaol_lecturas_segundo_grado_primaria_sep.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_off0000e228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE228 5392 bytes
SHA-256: 9062b3ca5ab74ce48d4ca8c51570fa144feaf0db40638985505714f2b96afd5d
font_01_sfnt_off0000f423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF423 10852 bytes
SHA-256: 2985f64a70caf4fe05af6b3474035aac6e527b84f1ad1e52e35a7dea9ff62164