Malicious PDF — malware analysis report

Static analysis result for SHA-256 0252f1d638c96609…

MALICIOUS

PDF

65.6 KB Created: 2021-02-28 22:37:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3723238d54cf8b0de4c152b0aedfd10a SHA-1: 02e54d18f7db15b4a1aba3d7b540882f1799581b SHA-256: 0252f1d638c96609a012b3f866920627f2d21defaf91d519d65fe0ef65f82db4
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://jottigo.ru/wix?keyword=taxonomy+and+the+6+kingdoms+webquest+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4499282/normal_6027c90e1dae8.pdfIn PDF document text
    • http://pubopogebam.22web.org/sigedetopoxutelitonubevu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412170/normal_60032079aa998.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408462/normal_5fee9149c5749.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492892/normal_5fc74bc61fd93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370063/normal_6025042d98beb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476429/normal_5fd24287b7681.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463825/normal_5fd64a044fdf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483604/normal_60247c92ba42c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491148/normal_602045012868a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lojokedasu.rf.gd/motiongate_dubai_map.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/vexiref.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/52550034586.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_off0000c308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC308 5904 bytes
SHA-256: b6340fb78a86c3d2d5d446527c87c58ee05bafa2a7304916770b4620f911991f
font_01_sfnt_off0000d70c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD70C 10040 bytes
SHA-256: b9530ff7b22d5a057462a26eeb42eafebfab0c248e333cb693ccf068f4227c83