Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a868449684565fe…

MALICIOUS

PDF

69.2 KB Created: 2021-02-25 19:32:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 56350106226f34fcb4533ccdb6afb47e SHA-1: 7a908267fe8b13bd292251b92d768bf587a04b3f SHA-256: 3a868449684565fe1bfd03bed53694c2fc528ec9eda9725115256c3ff9d577c8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/award?keyword=ejercicios+agudas+llanas+y+esdr%25C3%25BAjulas+4+primaria+pdf PDF link annotation
    • http://yazansoft.com/ansible_and_extractwymg2.pdfIn PDF document text
    • http://alcexpress3.xyz/2669362966087kgu.pdfIn PDF document text
    • https://tirusagoxavux.weebly.com/uploads/1/3/5/3/135329940/zavototubek-jujitudef-zovujof.pdfIn PDF document text
    • https://cdn.sqhk.co/kapapomabu/Riduihf/xinuve.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470014/normal_600728f1daf8a.pdfIn PDF document text
    • http://antinomi.design/45413765231swoj6.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/ggchhjd/translate_russian_audio_to_english_text.pdfIn PDF document text
    • https://zipufalazuviw.weebly.com/uploads/1/3/1/8/131856517/mubam.pdfIn PDF document text
    • http://terugate.mypressonline.com/rosemary_baby_review_indonesia.pdfIn PDF document text
    • http://copyright-rules-help.com/kenmore_oven_troubleshooting_f1lkl9h.pdfIn PDF document text
    • https://zokolukesowi.weebly.com/uploads/1/3/0/7/130776120/dumazapezugu.pdfIn PDF document text
    • https://cdn.sqhk.co/libibajuzumu/fgdIhgS/bts_dynamite_mv_views_countdown.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/what_is_included_in_dodge_durango_tow_package.pdfIn PDF document text
    • http://timinome.getenjoyment.net/raxosonopinewawas.pdfIn PDF document text
    • https://dasateju.weebly.com/uploads/1/3/4/5/134582383/89d99d.pdfIn PDF document text
    • https://cdn.sqhk.co/setuboluraje/cibLhdf/fisagojavetepitemagu.pdfIn PDF document text
    • https://cdn.sqhk.co/vopupevomate/iKhdVlT/border_patrol_san_diego.pdfIn PDF document text
    • https://cdn.sqhk.co/xijodepub/z0ifjic/kung_fu_panda_2_lord_shen_quotes.pdfIn PDF document text
    • https://cdn.sqhk.co/gozigawefo/FiaS3gf/60572346191.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xowobovu.myartsonline.com/does_short_term_medical_insurance_cover_pregnancy.pdfIn PDF document text
    • http://mukanebesiva.atwebpages.com/guitar_songs_for_beginners_electric.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_off0000cdec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDEC 5816 bytes
SHA-256: cb65912fa5d317df68a1ebbffdd409f444e38938f93991183b1d51faaab0bde1
font_01_sfnt_off0000e18f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18F 10528 bytes
SHA-256: 8f48e8bca04725332173e6e77cb2ee3e400e058102f9b209fe191ab1a21b380e

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