Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce489c8632186768…

MALICIOUS

PDF

70.5 KB Created: 2021-02-19 20:43:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c5235d513cfe0369178bca7340289d90 SHA-1: cb9e555c2339e1796e3996e947de0987cdbe8996 SHA-256: ce489c86321867683a27ef5c21e082c5524993b570c3cd7e9e29e8a28b74ebba
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=static+and+kinetic+friction+lab+answer+key PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391303/normal_5fd278562b102.pdfIn PDF document text
    • http://gufutaca3.xyz/nc_drivers_test_cheat_sheetil38z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425010/normal_600130e2d2980.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382772/normal_5fc9c144b9843.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386594/normal_5fc768df9b43c.pdfIn PDF document text
    • http://mklhhhh.space/the_escapists_stalag_flucht_escape_guide1exc0.pdfIn PDF document text
    • http://goodnatural.space/oil_water_separator_design_guidelineskx08c.pdfIn PDF document text
    • http://medyayazilimtr.com/18618094584fsizh.pdfIn PDF document text
    • http://itasummer.fun/46939023987a7pe1.pdfIn PDF document text
    • http://jobauthor.online/lesson_6.1_practice_b_geometry_answe23v0f.pdfIn PDF document text
    • http://armlur.space/free_printable_math_worksheets_fractions_to_decimalse6t9y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378161/normal_600dfcbb3f07d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473056/normal_60011b09daa4e.pdfIn PDF document text
    • https://cdn.sqhk.co/mifaruzamexu/OdAeGij/tennis_clash_3d_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369173/normal_5fd8627831875.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380691/normal_5fdbfb341d10e.pdfIn PDF document text
    • http://myimperfectmomlife.com/92235817805iu7a3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425229/normal_5fc868c126666.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381971/normal_5fcee6c14f24c.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/pulujolatepuv/kudikanepowog.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/bangla_font_style_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/backup_android_phone_to_dropbox.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_off0000d7e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E5 5516 bytes
SHA-256: f8f834dc2e33f0cdd99a237fe7a4a9b89c54db1174b9275cb7fcab36b57bcba0
font_01_sfnt_off0000eacb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACB 9872 bytes
SHA-256: af1afd0c95b6f0138820e4940348d2cc184b78a2ec33991b85d9588849f1cf61

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