Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef34bcd2d6fdb305…

MALICIOUS

PDF

69.7 KB Created: 2021-02-21 16:43:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f8fbafd8895f5be4f27f06a49037c920 SHA-1: b673104d7be498f075236d387b1c077368fd2d09 SHA-256: ef34bcd2d6fdb305cc4845e37adf5e4adfdaf404c7549a1dddc30743f2d35b87
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=ribbons+of+hope+alabama PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384036/normal_60251ba86eba9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370791/normal_60125df466bb7.pdfIn PDF document text
    • https://cdn.sqhk.co/maxevurux/hgpGXgh/gijebufejixovogixu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450147/normal_600d5b2a766c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426088/normal_5fdb755d9839a.pdfIn PDF document text
    • https://cdn.sqhk.co/xisiwuba/pygjk9b/43134234343.pdfIn PDF document text
    • http://digtalcaliper09.xyz/integral_csc2_xhq9la.pdfIn PDF document text
    • https://cdn.sqhk.co/felebamifuk/dZCUggj/like_short_video_app_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382618/normal_601a051ab6cab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504922/normal_5ffe448adf092.pdfIn PDF document text
    • https://cdn.sqhk.co/dafibuxoki/heQTib4/11413370457.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fasosurid.epizy.com/figojaviwokasosituzag.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_off0000d52f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD52F 5192 bytes
SHA-256: 65e14ff1f945c1a506156c15fd5f4be33b957fb6e72ebdefb8ad8bf293463063
font_01_sfnt_off0000e6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B5 10384 bytes
SHA-256: 92f62a1956e9b2baad944c8709f2551133d93bb1b901b97c541d250d215e4fee