Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a098d0951078dc1…

MALICIOUS

PDF

79.1 KB Created: 2021-02-26 01:46:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 497d15fa7c14fa3d20b6e2295fbfc24d SHA-1: 33044f5a560d7a9adbf78deabd21b1b0faeb4b65 SHA-256: 3a098d0951078dc1e2b3ace6a22afe17163e29256cd543657030ad05fbb79ff7
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://maypoin.ru/wix?keyword=regal+keto+reviews PDF link annotation
    • http://jarewitof.mypressonline.com/40956752255.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451230/normal_5ff277d269be5.pdfIn PDF document text
    • http://sodowetan.mywebcommunity.org/options_futures_and_other_derivatives_8th_edition_solution_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475734/normal_5ff067b5f2e5a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471095/normal_5ff05e8c639ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416302/normal_601f87ce8b7c7.pdfIn PDF document text
    • http://slmit.fun/atonement_chapter_summary_part_2eudtq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486374/normal_60062a51a01bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454286/normal_6005f9b08eb16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425009/normal_601228526365b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474169/normal_5fcfec6ad46d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404738/normal_601af79925331.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/xapijifas/33813540077.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/spanish_1_midterm_review_2015_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/falejogajir/kaspersky_antivirus_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/apple_watch_hermes_faces.pdfIn PDF document text
    • http://kofaxafogi.myartsonline.com/94606459754.pdfIn PDF document text
    • http://gevejonitu.onlinewebshop.net/ziluwetepebilutenegupute.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_off0000ed81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED81 5076 bytes
SHA-256: fcb5c8784e41313fd7b957094820bbf5d0668542b3269f3fe2dcac935e4388de
font_01_sfnt_off0000fef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF3 15472 bytes
SHA-256: 4b8a8ccbb41795769dfce086041309adf2d134166308d1aa29a5cad9681a0225