Malicious PDF — malware analysis report

Static analysis result for SHA-256 774d3f3e61c561c5…

MALICIOUS

PDF

70.5 KB Created: 2021-02-23 02:48:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bc8798d31f97ce67a88657433f2c48bf SHA-1: 8e5ac3145b39c9128bb085340f0d9c284835101f SHA-256: 774d3f3e61c561c58b30aa380a61a3a60d97c20310d7e575a77d4df56c589117
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://seumenha.ru/wix?keyword=charter+school+application+sample PDF link annotation
    • http://goodsfor.life/vobagaxujikomifiwenobemeprq0z6.pdfIn PDF document text
    • http://prognoz-football.club/guviwafamu4pbz4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475217/normal_6009849ac7099.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449614/normal_5fe119654a14d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389384/normal_5feb061a429cc.pdfIn PDF document text
    • http://4escam-bot.online/allegory_definitiongvduh.pdfIn PDF document text
    • http://levupag.22web.org/brownian_movement_2010_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413978/normal_6022268c60aab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411491/normal_5ffe19bb70646.pdfIn PDF document text
    • http://poradoit1.site/tepaninuzagenadafev5o96k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422631/normal_6015bac83b644.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pirafabitibabik.rf.gd/junisumigesazagemade.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/tapafitawutugevelibe.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/68358053020.pdfIn PDF document text
    • http://velumosak.epizy.com/bigoruxase.pdfIn PDF document text
    • http://debatebarumexa.epizy.com/24713126063.pdfIn PDF document text
    • http://pawuvunof.epizy.com/jajatuk.pdfIn PDF document text
    • http://ditajizuru.rf.gd/patonagit.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_off0000d6f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F6 5076 bytes
SHA-256: fbe50906973b7fcd46dc9d299f3021b6bb046b1ad733dcaf0b423463ffc538cd
font_01_sfnt_off0000e80d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE80D 10844 bytes
SHA-256: e4e53159e63253931eb6abd1e70adee6e849193eaadd43775b023ad726e86a25