Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f73daa6c20f6cca…

MALICIOUS

PDF

70.1 KB Created: 2021-01-31 18:26:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d3d11e595c056af567d8d9039fd28502 SHA-1: 11d13faffa3068a914ec1aa46d3f835eab8c7f6a SHA-256: 6f73daa6c20f6ccac14fed4f3c5fb1f6ddd73add5c3787fa43dc15beaea4442a
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://druttle.ru/123?utm_term=hunger+games+study+guide+questions PDF link annotation
    • http://perevod-card2card24.site/17827484458bnk5t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371514/normal_5fdf5017ef0e9.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/2jgihdQ/47352192136.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/72DlEgh/nintendo_switch_n64_emulator_installieren.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485440/normal_5fce723ee23b6.pdfIn PDF document text
    • http://rukusifokib.22web.org/14302808242.pdfIn PDF document text
    • http://servisvds.ru/28315843653wkcq1.pdfIn PDF document text
    • http://werenntaq.online/laxodepokewewewiwudevapg0.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/4Hubdjj/65067011686.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451742/normal_5fe186f6169ae.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/penale/worksheet_for_esl_students_free_printable.pdfIn PDF document text
    • http://sujosivetobifir.epizy.com/61148859974.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/chamakte_chand_ko_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/afghanistan_history.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/baldor_bench_grinder_operator_s_manual.pdfIn PDF document text
    • http://demiwadipojaz.epizy.com/pobivofi.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/juguninewopop.pdfIn PDF document text
    • http://dibadedogiw.epizy.com/freshwater_fish_species_identification_worksheet.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_off0000d58e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD58E 5304 bytes
SHA-256: 822ccd2fa35f507e76d12c6865526ce5e2c9a53e54342d87cfc9e724be19877a
font_01_sfnt_off0000e783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE783 10508 bytes
SHA-256: 770dbff4f2a0f57cf957d3a706572065fcc893324e89dc597a8c11db9458c82a