Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e1b409c61917c85…

MALICIOUS

PDF

69.4 KB Created: 2021-02-24 17:49:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9ffe4a3f163d0527cf70a8362fce89db SHA-1: 5d55a88810480b493d16bea185c43a123f984dac SHA-256: 5e1b409c61917c85c7248bc1cd7858593ff15f1439a28b1c93dcd5204bbbe0eb
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://jacksth.ru/award?keyword=how+to+light+rheem+tankless+water+heater PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471114/normal_60332483c71b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420222/normal_5ff2e3d4c68d1.pdfIn PDF document text
    • http://rankingcoach-apps.com/business_presentation_ppt_templatesmer7l.pdfIn PDF document text
    • https://cdn.sqhk.co/desogepupema/jpgiie4/bupezurula.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/jeieRMX/95558944074.pdfIn PDF document text
    • https://cdn.sqhk.co/wunokebewoz/ZzdYyjj/daily_challenge_card_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384460/normal_5ff5b11966f09.pdfIn PDF document text
    • https://cdn.sqhk.co/tejosepu/rz3skib/janodexavamone.pdfIn PDF document text
    • https://cdn.sqhk.co/fumodolanes/ih0ific/simplerockets_2_download_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372983/normal_60089b2c2fc39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484143/normal_5fdc26af81398.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dupikupujetilu.rf.gd/19918172220.pdfIn PDF document text
    • http://wawebexitet.rf.gd/68667875469.pdfIn PDF document text
    • http://fabupumow.epizy.com/troy_bilt_model_13at609g766_parts.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_off0000d4af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AF 5216 bytes
SHA-256: 0113662f66459a2ea366eb0b89d4b894ef1f9b16e8ff4232ea426c1960fbeb0b
font_01_sfnt_off0000e651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE651 10160 bytes
SHA-256: eedfc4280a4ae0ea647890ade5e4f1cfc90778d4440a98e5c178467ae2f89009