Malicious PDF — malware analysis report

Static analysis result for SHA-256 df38dec9d2894cf2…

MALICIOUS

PDF

64.0 KB Created: 2021-02-03 22:40:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0e0497a2251fe465c2c8f8606ea29843 SHA-1: 418d917e61e081da48a11314e1fa4f25c4057d9b SHA-256: df38dec9d2894cf2b224ba4f82c996aec4cd97911fd64d13ad587c4177584e04
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wb?keyword=bhojpuri%20film%20wanted%20video%20%203gp PDF link annotation
    • http://e-devletodeme.net/elementary_classical_analysis_marsden_2nd_editionzdhzf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369525/normal_5fd07cfa0ede7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467581/normal_6004e3e172e19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372972/normal_60194ec10d0f0.pdfIn PDF document text
    • https://cdn.sqhk.co/jorimalid/Micchdf/pluto_tv_buzzr_channel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426944/normal_5ff5e15a04e10.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/Wwgdjb5/gutscheincode_media_markt_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407066/normal_5fd266f34fd15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489056/normal_600a01ac40c26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446925/normal_5fe9f2be5b6f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413575/normal_6006e629bc098.pdfIn PDF document text
    • https://cdn.sqhk.co/lolatonuvesa/Jjjgijj/stickman_zombie_games_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/deBiggc/wosegotafekezar.pdfIn PDF document text
    • http://leqqurint.online/vintage_action_figures_price_guidedeazx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_600c366e35b44.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/nolarifaforuxop/56398630879.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/forma_de_gobierno_aristocracia_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/medical_book_cover_design_vector_free.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_off0000bc9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC9C 5716 bytes
SHA-256: 853df428228ff00da9f2bc49b9ba4059b5247d89b8418375e7bfd52ef164458f
font_01_sfnt_off0000d00d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD00D 10408 bytes
SHA-256: de72a0fc945afe5c5eb5470cc4c685fc311f92269d615477fc16b96178354e6e