Malicious PDF — malware analysis report

Static analysis result for SHA-256 a15935d95ba10e2d…

MALICIOUS

PDF

66.5 KB Created: 2021-02-21 12:55:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8a8bf3b7e8694216d8181d543668e4fe SHA-1: 452b16dada936de50f804451e01e6e23a3d2831f SHA-256: a15935d95ba10e2dbb0ebe47b6a3afc146eecffb323a60fcde659a8032f48173
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://baarspo.ru/wix?keyword=the+incredible+burt+wonderstone+free+online PDF link annotation
    • http://padlamadla.site/64363240699te4z6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385206/normal_60053a8286833.pdfIn PDF document text
    • http://womenita.fun/ansi_c84_1sg5uk.pdfIn PDF document text
    • http://dubiniba.iblogger.org/love_bangles_song.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417403/normal_60274b7141c0b.pdfIn PDF document text
    • http://uaportal.site/7887087649ah3up.pdfIn PDF document text
    • http://crispyset.online/cars_2_movie_download_in_isaidub3vo4h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404512/normal_6019cc721946c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380691/normal_5fd80a0340397.pdfIn PDF document text
    • http://instapodarok.site/drunvalo_melchizedek_flower_of_life_volume_1dujhj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392444/normal_5fde4cd29d688.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488100/normal_6031e6056ad31.pdfIn PDF document text
    • http://gopubewigofopa.iblogger.org/98505525804.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/lovetijif/xunotidilijave.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/videoder_app_install_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/juxibej.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/entire_website_er_online.pdfIn PDF document text
    • http://sewodup.rf.gd/wovunepexupesumimijibixeb.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_off0000c7aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7AA 5080 bytes
SHA-256: 3a4b9e928126f8dc318531e2d691574ff37358856c66a6fb8d839437ab350b8d
font_01_sfnt_off0000d900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD900 10384 bytes
SHA-256: 81d5e29f3679899cff2fe2a7e0c81b09ae6748dc2598dd057885f5342398074f