Malicious PDF — malware analysis report

Static analysis result for SHA-256 66da0112c911f0ad…

MALICIOUS

PDF

72.5 KB Created: 2021-02-27 04:08:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9f37fd80519cf336c54230aba114005b SHA-1: df677ce9d8a06034776a9b086221991c587c23f5 SHA-256: 66da0112c911f0adac3fe1b3ba2130181d0f8f008bb53a9e0f47745e8b38b02a
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://pelibifir.ru/award?keyword=2008+escape+no+crank+no+start PDF link annotation
    • https://cdn.sqhk.co/bokupajokim/jbhc2ja/touchgrind_bmx_2_all_maps_apk.pdfIn PDF document text
    • http://all-system7.xyz/4th_grade_reading_comprehension_multiple_choice43yn8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502819/normal_5ff4f8ab4534a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410975/normal_5ff6994dc8e14.pdfIn PDF document text
    • https://cdn.sqhk.co/bemovunilupo/jafibgi/true_skate_free_coins.pdfIn PDF document text
    • http://idealica-ordina.site/3234270263p7nef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503874/normal_5fc78e0e88304.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483867/normal_5fd193905b88a.pdfIn PDF document text
    • http://nakenanizugaxit.iblogger.org/gupujavudovisutixijegesi.pdfIn PDF document text
    • https://cdn.sqhk.co/nobukomorur/Sjh9Fif/xorogobo.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/murudute/lisumoluzaturakelejifib.pdfIn PDF document text
    • http://gutazerabudapa.epizy.com/74161536569.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/auto_mouse_and_keyboard.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/react_code_formatter_component.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/wow_classic_addons_guideline.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/allergen_declaration_format.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/nebidoji.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_off0000df61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF61 5332 bytes
SHA-256: af6de6fd2c3b5a2a2c8cc9a3b2688e19f935d06997de3f95a5b157f1d8ad4310
font_01_sfnt_off0000f193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF193 10368 bytes
SHA-256: f03499fcf0ec07695f4d1357ee2d209b97dfb7a39805e8ee28edb4037539e148