Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7d189e4b4e35e4…

MALICIOUS

PDF

71.0 KB Created: 2021-02-15 11:43:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 358b586d7b8c28f8c5f734ff16192921 SHA-1: bd9e45aee6c17b37a79aa2e1cd79b11bc8e1c78c SHA-256: 4f7d189e4b4e35e4f076c11ccba7640c9c923dbe0bb9db568e2bb10ec14783cd
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=clash+of+clans+mod+apk+latest+version+unlimited+troops PDF link annotation
    • https://cdn.sqhk.co/xeduwukaxusa/qig7BTs/xadib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500001/normal_5fe9741e5f382.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490534/normal_60102aeb3abfd.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/igjiY1z/xurepujenuzunafufakokapu.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/f0VibB4/frogger_2_gameboy_color.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/bjdtjOJ/usa_facts_coronavirus.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/ihcighc/sedovemu.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/gdjbhaZ/1722578482.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450864/normal_5fda84bccb2a9.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/jazuravazaguz/attractions_map_london.pdfIn PDF document text
    • http://gevewodex.epizy.com/barren_river_lake_fishing_guides.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/zazowawigaluk.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/apk_pure_apk_file.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDE 5424 bytes
SHA-256: eb2f4a3472b0b5cf7a6362cef5cc523a91bfa3fd85c4048aee5f3dd515c8fa44
font_01_sfnt_off0000e223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE223 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000eab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB0 10412 bytes
SHA-256: 96892f21eb657730a675fbdc35faf4b443409fa3bb8dcd7824d305a65f80a6e5

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