Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd0f95e84536bd29…

MALICIOUS

PDF

64.8 KB Created: 2021-02-21 17:26:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ccf9a2aef3aa99ded1079697dd2fee21 SHA-1: 793385bf97e71a3794aee5eaa3144a8f801fc4aa SHA-256: bd0f95e84536bd29c0c6213a4a654160ee3dfd62e0b475ed771b420938479a49
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://baarspo.ru/wix?keyword=scarlet+ibis+selection+test+answers PDF link annotation
    • http://opit.space/burnley_squad_formationjono9.pdfIn PDF document text
    • http://covid-19online.site/data_structures_and_algorithms_made_easy_c_c3giup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450438/normal_5fe84e7af3d4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416665/normal_601166af8590b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413835/normal_600032e531374.pdfIn PDF document text
    • http://divuwon.iblogger.org/kodak_alaris_capture_pro_manual.pdfIn PDF document text
    • http://fixebojamofi.iblogger.org/sibetasojas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496380/normal_5fe25e959e188.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480753/normal_600b39fb2081e.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/kavugusepe/91310863099.pdfIn PDF document text
    • http://safipalibeso.rf.gd/xisefadufuxuvof.pdfIn PDF document text
    • http://ribitotuv.epizy.com/what_words_should_a_first_grader_know.pdfIn PDF document text
    • https://s3.amazonaws.com/nafamaragisek/ant_video_er_for_android_tablet.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/59701968371.pdfIn PDF document text
    • http://fonajuwowo.epizy.com/74188321671.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/44232470488.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_off0000c1c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1C6 5128 bytes
SHA-256: 05672ae72140ebfea49a1717311140de8bf4cd68583940f9fc23d31e57a4d48e
font_01_sfnt_off0000d353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD353 10192 bytes
SHA-256: 2d2a46f92fd9c5c18e7066d1947545fc644f1189b21b336e553a5c260341db11