Malicious PDF — malware analysis report

Static analysis result for SHA-256 63b76d5ba239db8f…

MALICIOUS

PDF

72.0 KB Created: 2021-02-09 08:59:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9ea0d861905ee727aef380f62c6951fb SHA-1: c9258b5ede6109d8eef16f84ea345170ef313614 SHA-256: 63b76d5ba239db8f825faac9badc80f4f5c3dcdf0e3d98347d17078f12cc7efd
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://jacksth.ru/wb?keyword=gambar%20animasi%20bergerak%20lucu PDF link annotation
    • http://raifaisentgo.online/duwerabugipewuxoxozewofeb7fe8.pdfIn PDF document text
    • http://komarovskii.xyz/35231955779ikghm.pdfIn PDF document text
    • http://nakanilo.club/stephen_hawking_breve_historia_del_tiempo3wqnu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484605/normal_5fd2d1e5ba345.pdfIn PDF document text
    • http://cadenalia.com/24313578458e0i26.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444647/normal_5ffe038ad03da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470040/normal_600409a91b2be.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/dojivewobasuval/pozaviv.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/manually_calculate_standard_deviation_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/63194566231.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/pivegutomanuw.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/asciidoctor-_custom_theme.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/academic_research_poster_powerpoint_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/andy_android_emulator_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/ruwaxokofagovaliwusutuz.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/75361383423.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/76980951970.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/algebra_nation_answer_key_section_6.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_off0000de01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE01 5352 bytes
SHA-256: b9eba6f6fdd5db214c633ca148aa15c93f33af8367b084d9d6d617190e94e556
font_01_sfnt_off0000f027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF027 10236 bytes
SHA-256: e525ed454d548d29490455f274b9dce926487dd8f03b4fbf9c68b7220a4b0ccb