Malicious PDF — malware analysis report

Static analysis result for SHA-256 98ee0fced41c6078…

MALICIOUS

PDF

70.0 KB Created: 2021-02-06 13:58:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e31dea079aa1c49a551f939cabc0f0ba SHA-1: dc4e21e3579fae3c792a3a1f849d0ccfbc589a81 SHA-256: 98ee0fced41c60785b796149c92ec5ae2c9788aeccd84ed7f2fb18804136bccb
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://bologen.ru/wb?keyword=google%20books%20app%20free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386074/normal_5fd2a3d619f1e.pdfIn PDF document text
    • https://cdn.sqhk.co/pewovixosafu/gbfGMhj/cute_pink_wallpaper_hd_for_mobile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446499/normal_600da2e4c63bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420468/normal_5ffbbd0591ec2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411480/normal_6004b33be0ea6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452381/normal_6003954aecc05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483081/normal_5fd7eac48a58b.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/2xkhfxW/good_football_drills_for_7_year_olds.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422368/normal_5ff5b1f4ae9e4.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/wiwamoxamo/beddys_rv_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/probabili_formazioni_e_ballottaggi_serie_a.pdfIn PDF document text
    • http://xupanapil.epizy.com/zifegaxazatinidegujepewak.pdfIn PDF document text
    • http://rimalapotozuf.epizy.com/graphics_cards_vs_performance_comparison.pdfIn PDF document text
    • https://s3.amazonaws.com/wolawatin/xinulugu.pdfIn PDF document text
    • http://loxosufodu.epizy.com/rewa_rewa_bhutanese_song.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_off0000d44d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44D 5304 bytes
SHA-256: ddfec0c45b811dc1765530161080ee2ecef4a9ded5a1f3d9bf4b07f88de07ea6
font_01_sfnt_off0000e672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE672 10924 bytes
SHA-256: 3983eb1c0ec4d79cfebf98b63c193a4d96180b6fc8e21035bd078c0c2fb2ee1d