Malicious PDF — malware analysis report

Static analysis result for SHA-256 579b09e0e79f4a6a…

MALICIOUS

PDF

74.7 KB Created: 2021-02-14 16:57:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a242c9da0bdd8a89c93a6a2daf39ab3a SHA-1: d9da05da59956f682b36da511c45be84f82cde12 SHA-256: 579b09e0e79f4a6a7d8d338745aa04c5d20585e9b3afb1c1797848bd70ab4737
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://leonvi.ru/wix?keyword=brother+mfc+j5910dw+ink PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413842/normal_5fd17c5c429e4.pdfIn PDF document text
    • http://devicesprotectionforusers.site/6985215955ldt4t.pdfIn PDF document text
    • http://tisiner.iblogger.org/letter_j_coloring_worksheets.pdfIn PDF document text
    • http://istlan.space/61806940573tx7lp.pdfIn PDF document text
    • http://lienforkid.com/340625578603rjjy.pdfIn PDF document text
    • http://mercelus.xyz/phoenix_arcade_game_pc_downloadaiex3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384036/normal_601fc43c46193.pdfIn PDF document text
    • https://cdn.sqhk.co/kurafuso/zEia5MU/nintendo_switch_console_bundle.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456982/normal_6026bd8bec16e.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/dapekufoxiraku/zediwelavewataxodilu.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/fiduxuvovifobawijagexosef.pdfIn PDF document text
    • http://jesegusanasukan.epizy.com/3060995183.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/god_of_war_valkyrie_queen_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/wpf_templatebinding_default_value.pdfIn PDF document text
    • http://totexamivemasal.epizy.com/tukefujobepir.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_off0000e2a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A6 5596 bytes
SHA-256: 366fb0380f550e9002bd884ca0cd1155767a786f1f268b8b382c12d12080d92d
font_01_sfnt_off0000f5b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B0 12688 bytes
SHA-256: 5b771dde37cf89cfdd5ef23853dfa5f570c234d58070aa15dc364b8cbb4b50e7