Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6e94ff159028d46…

MALICIOUS

PDF

73.7 KB Created: 2021-03-03 22:25:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c8dd9bf7573a9ade8a115d08e5eb96f6 SHA-1: fe1bfea3fefae90bad577a45366589f498e85a78 SHA-256: e6e94ff159028d46d32d406324fd8a5d71b778bb2774c229cd78af654136032a
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://seumenha.ru/award?keyword=dok+levels+of+common+core+standards PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366325/normal_6009aac3c4e1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418170/normal_60185b92b1adc.pdfIn PDF document text
    • https://cdn.sqhk.co/buzulexoxuve/htjhvje/journeys_interactive_series_mod_apk_1._0._350.pdfIn PDF document text
    • https://cdn.sqhk.co/gulifunanale/hgghche/brawl_stars_wallpaper_4k.pdfIn PDF document text
    • http://sibatike.getenjoyment.net/what_important_event_happened_in_1877.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416139/normal_601b1e9d4ebf4.pdfIn PDF document text
    • https://cdn.sqhk.co/zimuteraf/gfib0aY/xovukadupo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421199/normal_5ff0cacc8171d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421969/normal_6039e1f443702.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404741/normal_5fec02bf8bac6.pdfIn PDF document text
    • https://cdn.sqhk.co/nobutowug/jgBkifd/nasiladurazuzewigox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460709/normal_602e7fd93bb84.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/iKTRjbD/tijidefonar.pdfIn PDF document text
    • https://cdn.sqhk.co/manigonodapu/mzmjimW/big_baby_taylor_acoustic.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://supajiwa.myartsonline.com/the_book_thief_audiobook_youtube.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_off0000e440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE440 5292 bytes
SHA-256: 3716aa993fe8bc6ce9d96cd0d4d24b6790b98eb72da3c3cecac1c11a35b9e80c
font_01_sfnt_off0000f63a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63A 10472 bytes
SHA-256: 2fa5918993d76d21904f2f1d4b42fef6769d912c7b5253809e54f5afb544c643