Malicious PDF — malware analysis report

Static analysis result for SHA-256 211af8a896f93224…

MALICIOUS

PDF

70.8 KB Created: 2021-01-20 17:53:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bab7359ba18ae436bc5aac9c70b08dba SHA-1: 63ebf56cefda3540f5c907c83693489ed9f5535a SHA-256: 211af8a896f932242c724b818bad092068b822347064c340946e7ecb491607e6
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://seumenha.ru/wb?keyword=mountain%20bike%20clipless%20shoes%20review PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409248/normal_5fae24cb341e0.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/8iiajjQ/82092547998.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416664/normal_5fb91af6cf7f9.pdfIn PDF document text
    • http://japadalifu.22web.org/pokepopiwigotasu.pdfIn PDF document text
    • https://cdn.sqhk.co/gewurasi/jjjiien/police_siren_app_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381344/normal_5f8bcebbd5843.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vivimaga.epizy.com/acute_bronchiolitis_guideline_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/pikojud.pdfIn PDF document text
    • http://gobipubefosoja.epizy.com/sheetrock_basement_ceiling_code.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/ponegox.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/botw_any_speedrun_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/chaap_tilak_song_coke_studio.pdfIn PDF document text
    • http://gezibetaw.epizy.com/4816671096.pdfIn PDF document text
    • http://foripoj.epizy.com/20990234413.pdfIn PDF document text
    • http://zezunas.epizy.com/79170807738.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_off0000d902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD902 5380 bytes
SHA-256: 8cc94236f7701397b8034105afb59fe12ded7f84a3fad2396552ae455bb6dd59
font_01_sfnt_off0000eb64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB64 10252 bytes
SHA-256: 96eb98c096e4d54006aa21dd2ada352aeaecfd9efdcd2c215e8f2331080e77f0