Malicious PDF — malware analysis report

Static analysis result for SHA-256 c846f07faa6238ba…

MALICIOUS

PDF

73.1 KB Created: 2021-02-28 05:23:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 05271406c8cf80dcee381af6dc839044 SHA-1: 1c8d7d15f4549744e0e16b271e910d614267be0a SHA-256: c846f07faa6238bae74d7a78b42c2c95f1750afa2811ab95b5c32ffa1025ad34
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/award?keyword=harry+potter+half+blood+prince+book+cover PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445104/normal_600fa1c2c0bdd.pdfIn PDF document text
    • https://cdn.sqhk.co/fukafodifi/UNsfHs7/princess_wedding_dress_up_games_free_online.pdfIn PDF document text
    • https://cdn.sqhk.co/toliximozupa/utsgjhZ/94530199971.pdfIn PDF document text
    • http://loxokunetuladi.66ghz.com/harry_potter_y_la_orden_del_fenix_libro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452608/normal_6029463aa4d2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372985/normal_6006d018a1318.pdfIn PDF document text
    • https://cdn.sqhk.co/puwukuwos/gdTRzn7/11745897077.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/ZJhgghX/kaiser_permanente_phone_number_to_make_appointments.pdfIn PDF document text
    • https://cdn.sqhk.co/vemosoveveb/fsijjcs/52170746663.pdfIn PDF document text
    • https://cdn.sqhk.co/riwajamugem/6r2yhfZ/39885868039.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lazunebenak.epizy.com/free_admin_dashboard_bootstrap_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/thomas_calculus_1_trke_indir.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/asus_crosshair_iv_formula_usb_3.0_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/bird_banding_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/hallelujah_chorus_sheet_music_cello.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_off0000e065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE065 5392 bytes
SHA-256: 55a4675f271e7de36e9152c3dcd4069dd6a35d9cef59f50ab3a64281dc8b8d41
font_01_sfnt_off0000f2bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BB 10760 bytes
SHA-256: 4b9ad212974cfcb0702e2295a296112ebf26469cfeb80b623b429b7fd1a0d35f