Malicious PDF — malware analysis report

Static analysis result for SHA-256 d84f8afb34391d10…

MALICIOUS

PDF

59.2 KB Created: 2021-02-13 17:07:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: da5a837133c105c5f1f6f8a2832c4d5a SHA-1: ad873d5ca559a77149cbe594317302a9aa0da6e8 SHA-256: d84f8afb34391d105a399a85bec61d2c1b0012232bed551089b40e4f3d8036f5
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wb?keyword=meray%20pass%20tum%20ho%20novel%20pdf PDF link annotation
    • https://pojuzalik.weebly.com/uploads/1/3/4/2/134235388/gozagupuwok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454575/normal_6001d5aeaa6e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402032/normal_5fea149182510.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476437/normal_5fda8f4b7b166.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373797/normal_5fdd06f4dd939.pdfIn PDF document text
    • http://mnatural.space/america_s_got_talent_2018_videos4pvjl.pdfIn PDF document text
    • http://copyright-notice-ig.com/8004711604ut153.pdfIn PDF document text
    • https://xisofufewazexi.weebly.com/uploads/1/3/0/7/130776718/puvajavovovadisidam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/garorowa/kokedakuxubede.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/form_in_cakephp_3.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/vewazapugutupolop.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/98762976764.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/vogugadukesur.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/arrival_of_the_birds_instrumental.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/19627923101.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_off0000ad70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD70 5448 bytes
SHA-256: 228730aeeb901da88a6dd6df64ae75e83c9ba93726286e8c1da3ba1a6eff238b
font_01_sfnt_off0000bfe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE6 9448 bytes
SHA-256: 8a5c5913a867a9cdcaf3076d16684f2e1cd37a008d6015928d73e98e1483398b