Malicious PDF — malware analysis report

Static analysis result for SHA-256 161f80caf6698705…

MALICIOUS

PDF

64.4 KB Created: 2021-01-09 23:39:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-20
MD5: fefa62e77309c304f7caa05e40fce6e0 SHA-1: 96c654d43f5bfe8d322a5eed2d7587e20ca253e4 SHA-256: 161f80caf6698705b2075c2b2211913701cd515a4b0434a8ad2d149be1da6d9a
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://traffnew.ru/aws?utm_term=arithmetic+series+sum+worksheet PDF link annotation
    • https://site-1175553.mozfiles.com/files/1175553/horse_racing_apps_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rozopebak/MjemVje/freebies_validity_meaning_in_tamil.pdfIn PDF document text
    • https://cdn.sqhk.co/baxemazisod/7pxicig/gebipapuraxufabekolowaj.pdfIn PDF document text
    • https://cdn.sqhk.co/diwidivu/figujat/10954149874.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/dpepYjb/frontline_commando_d_day_hack_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/feduvefas/EKRhcee/sports_head_football_unblocked_champions_league.pdfIn PDF document text
    • https://site-1174921.mozfiles.com/files/1174921/hackspace_magazine_27.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/WTiOA1D/vitamin_c_supplements_for_skin.pdfIn PDF document text
    • https://cdn.sqhk.co/bidelefo/Nicidie/water_parks_in_broward_county_florida.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/nezanurugega/sibizugalagifodosoxula.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/siduxitexodaz.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/73548895143.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/demonstrative_pronouns_in_spanish_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/nunifabajalawumameze.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/zepefefezuxajow.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_off0000be2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE2A 4940 bytes
SHA-256: ef1d4e38d34cd8bba2c8cf8818c61813d543b12f459577070eb6b4fba6ef7bb7
font_01_sfnt_off0000cee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE3 11248 bytes
SHA-256: 03c6b101187113f8bebcb2f2a815a544d83a0d81df0faa744523e6d7244f80f1