Malicious PDF — malware analysis report

Static analysis result for SHA-256 8256db716d229730…

MALICIOUS

PDF

69.1 KB Created: 2021-03-01 15:51:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f33ef05e5487a0767c46ae42c22a4e65 SHA-1: dd788384f2d021058a0dd2684bc3bf49bbee9d6b SHA-256: 8256db716d2297300f6b3d4ce92be6077ae5ed819bccdce32420bf1886f0b9a8
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://xajibur.ru/award?keyword=treasure+island+book+quotes+with+page+numbers PDF link annotation
    • https://cdn.sqhk.co/nimuxugemu/d1weOME/hunt_showdown_hidden_achievements_steam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386347/normal_60230356998ab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duxuramubot.epizy.com/android_phone_version_of_siri.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/54834972970.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/fo4_mod_guide_reddit.pdfIn PDF document text
    • http://salilizuvozel.rf.gd/sumoki.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/naxurizuwiz.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/66270107205.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/93021198135.pdfIn PDF document text
    • http://robabunegulawi.rf.gd/74723468434.pdfIn PDF document text
    • http://zedameziwelo.rf.gd/fifty_shades_freed_in_hindi_download_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/4th_grade_division_problems_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/87090497717.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/what_is_thrax_in_osmosis_jones.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/hubbards_marina_fishing_reports.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_off0000cef0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF0 5744 bytes
SHA-256: 259f830ad2928b5509c5c145d58b3362526900b5602e767d4b81860fb91fc3a7
font_01_sfnt_off0000e24a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24A 10256 bytes
SHA-256: 098d38890127d6d97dc860ff297a29b004af4c48df6bcf7a443b02182ce0a554