Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce8f151b6c8292b…

MALICIOUS

PDF

66.9 KB Created: 2021-03-02 22:20:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 16e5fe5b2d3d0184687c0e0292cd905f SHA-1: 7dbe52e63b98d4a51c7d0bf25dd65f3949f9b932 SHA-256: 0ce8f151b6c8292b0f4a155828d0f0129ad7afcc178e5370fbb9f541ce041e08
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://nipisod.ru/strik?utm_term=where+can+i+buy+cheap+burlap+ribbon PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373998/normal_600b4318d9de4.pdfIn PDF document text
    • http://opticsystem.website/dynamic_sheet_reference_google_sheetswy68q.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469104/normal_6019a95833ba1.pdfIn PDF document text
    • http://apple-fruit.space/bridal_shower_invitation_email_templates63k0p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402721/normal_602ea87c9361a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426816/normal_602a6f8d26e44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387807/normal_600f118ba49f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474223/normal_5fc8883c8f315.pdfIn PDF document text
    • http://openplafond.xyz/xifazilonizuwa2z9ka.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/bisegilupuf/certificate_template_portrait_word.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/rent_agreement_format_in_english_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/black_boy_full_text.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/gout_guidelines_2017_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/wallpaper_hd_hare_krishna.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/instagram_stories_hd_online.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_off0000c97b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC97B 5100 bytes
SHA-256: 454c396ab4a5d240d9ef41574fbe16660e5788d747c99288d560ca3e458713fd
font_01_sfnt_off0000dae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE3 10152 bytes
SHA-256: 3585e521a48431252a233faae2fb493f31f1ae73172318e27eac3755fce9d4d1