Malicious PDF — malware analysis report

Static analysis result for SHA-256 103b6f94f68f3627…

MALICIOUS

PDF

71.2 KB Created: 2021-03-13 20:42:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2ef04dc981e69cfd05939bf5e3e05c1f SHA-1: 08722646f304767bc3fd02d025884ac9e547f80c SHA-256: 103b6f94f68f3627d59bfb4610c59a001227ae253bca8bcdf57da9e80e011ec1
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://zajinet.ru/award?keyword=gloomy+sunday+pdf+chords PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379611/normal_6001694a3256b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479446/normal_5fcad6da1a58c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475219/normal_60248ce6f24c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471969/normal_5ff329a89ae44.pdfIn PDF document text
    • https://cdn.sqhk.co/jasamomedam/htjgicd/96599353484.pdfIn PDF document text
    • http://venovagom.iblogger.org/jusujimumo.pdfIn PDF document text
    • http://guworumitikizu.iblogger.org/zedakixa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476275/normal_600b38c1457d6.pdfIn PDF document text
    • http://mowisadewojapu.22web.org/15079051213.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/aiagfjb/formula_area_of_a_trapezoid.pdfIn PDF document text
    • https://cdn.sqhk.co/jalinutaxos/hidoifA/zakovevazo.pdfIn PDF document text
    • http://zugugalepew.mypressonline.com/zozisatexijobegubijuboxon.pdfIn PDF document text
    • http://vegifeda.mypressonline.com/why_do_rabbits_change_color.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/figidireki/accident_bengali_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/zuzin.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/binet_kamat_test_of_intelligence_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/gunuwokilawubudebuzomome.pdfIn PDF document text
    • http://kulekedeziwab.epizy.com/alzrc_devil_420_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/xuwowa.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/equations_with_fractions.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_off0000d905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD905 5528 bytes
SHA-256: 0bcdc7988078c92e248da577ba091508ee278de1154bbc6f1e9ba29b9d9aaeee
font_01_sfnt_off0000ebb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB4 10496 bytes
SHA-256: 5c9c9d4f3648a91458bbc8b30130ef3723f710d8fa766dcf7c605ab25c51f3ee