Malicious PDF — malware analysis report

Static analysis result for SHA-256 722d886c316b18c1…

MALICIOUS

PDF

71.7 KB Created: 2021-02-20 06:39:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4cf5e2eeb1d89ab9e0cf7034654f52d2 SHA-1: e7673b792f59efb73efa3a73e3a506af268876b2 SHA-256: 722d886c316b18c1db4042790c661d5186b33f8f12c6b3ea2a7a3df58c4e4434
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/wix?keyword=more+than+this+jay+mclean+pdf+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446915/normal_5fcca7051ca06.pdfIn PDF document text
    • http://fitdieta.com/swedenborg_afterlifeg7po1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416939/normal_60013c0c8c080.pdfIn PDF document text
    • http://kolomata.ru/81664365014nzlh.pdfIn PDF document text
    • http://trellos.fun/nezilunutepagofipefip50xq2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382790/normal_5fdfcf4524a52.pdfIn PDF document text
    • https://cdn.sqhk.co/digatamale/Ohhidgf/puferesarirudikexapamirib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424982/normal_601c86341f7e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378153/normal_5fc5f4f2c6492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404296/normal_600a920e64f56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426815/normal_60254d4303989.pdfIn PDF document text
    • http://pubguckazan.com/sony_music_center_app6ou71.pdfIn PDF document text
    • http://axecheat8.xyz/bar_graph_worksheet_grade_4f1x4r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376105/normal_6010fcc08d44f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464080/normal_6006e2da3137c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410020/normal_60280dbc6c431.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB34 5668 bytes
SHA-256: ef1e652ffb7c9692519f9c53af88f628facd7ad27f8548c221bd233c92784000
font_01_sfnt_off0000ee7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7E 10308 bytes
SHA-256: cb1731b02348043dd737f38cdb12f6235d76a06d0f0df727257e18bab416b115