Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f4300a3cbc88c51…

MALICIOUS

PDF

71.4 KB Created: 2021-03-01 16:42:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 382bfac9040ea05802cced119d507f35 SHA-1: c2a8fc7d7e49c844b2fb8ead1335341d921d8860 SHA-256: 0f4300a3cbc88c510fe8116de342229e4a8f7bf5018be19fff02ca0d085d5180
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://resalured.ru/award?keyword=tajweed+rules+pdf+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4386363/normal_5ff28f98eff6f.pdfIn PDF document text
    • http://sugujob.22web.org/fefujoxituxefewadiketudus.pdfIn PDF document text
    • http://aires.fun/martial_god_asura__3361fhbl3.pdfIn PDF document text
    • https://cdn.sqhk.co/medugagoviji/fg4iaZa/lead_parent_app_for_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373797/normal_5fd250640df70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486535/normal_5fca710b4665a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475016/normal_6021ef1a3c7d5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/crappie_fishing_guides_in_arizona.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/free_project_roadmap_ppt_template.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/brooklyn_nine_nine_episodes.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/corrugated_iron_sheet_making_machine_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/66337780357.pdfIn PDF document text
    • http://xofunuxemijowex.rf.gd/acer_aspire_es_15_windows_10_recovery.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c78d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC78D 5152 bytes
SHA-256: 29bd750f9664db3c73711dad2231841a478dcc897ad4fee887f0e9df0733b607
font_01_sfnt_off0000d92d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD92D 7780 bytes
SHA-256: 93b267065cd4e07a8c181f1100cb6cbc54b5f0a855ef177ba464755d18068e73
font_02_sfnt_off0000ee0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0D 10148 bytes
SHA-256: f56fd59f2d6c10aa3fb543bfa0ff829940488140f717ee7fad2d408e1bbf3075