Malicious PDF — malware analysis report

Static analysis result for SHA-256 b68be3d98a1ac1b9…

MALICIOUS

PDF

72.4 KB Created: 2021-02-25 23:29:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9ab17d35e35f12d07358343df4be8239 SHA-1: 760ceef98daddf5624a05524190b41e04b3ac9b7 SHA-256: b68be3d98a1ac1b951d71f943cbab101c88e596cbb87bb4bb1eed88b77c1a5ae
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://jacksth.ru/award?keyword=larousse+gastronomique+english+translation PDF link annotation
    • https://cdn.sqhk.co/pukikojat/gefFkop/come_say_hi_in_spanish.pdfIn PDF document text
    • http://bovewitavivebu.getenjoyment.net/xevatiwitepekujiwatefat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369653/normal_5ff1fbc9a3ca3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447460/normal_6003d5a49402b.pdfIn PDF document text
    • https://cdn.sqhk.co/nupegefozub/uhcrTmr/32248806483.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379848/normal_5fe1c86fcf8aa.pdfIn PDF document text
    • http://lelekelosutov.getenjoyment.net/where_do_chicks_come_from_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453532/normal_5fe65eb6b759f.pdfIn PDF document text
    • https://cdn.sqhk.co/linerutinew/iiigr2Y/actc_racing_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/lojibuwe/jhGggWU/relowivenujot.pdfIn PDF document text
    • https://cdn.sqhk.co/lebudawojafi/gSgejbj/22714328175.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/geradi/kali_linux_boot_usb.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/sitalikadorob.pdfIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/rapewuwexotidexuxutirino.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/fitted_bed_sheets_cheap.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/9693629260.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/microsoft_access_runtime_2010.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/how_do_i_calculate_pool_pump_flow_rate.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_off0000df32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF32 5168 bytes
SHA-256: ad54a9f407080b3cfe08844e260e9be69afab0f4fcc362fb6821ba497cb7c0ff
font_01_sfnt_off0000f094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF094 10492 bytes
SHA-256: 0865c3e15b524087559eff7b446ca8ce6067087c5397c85c041196af88b18453