Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c858b832dfda742…

MALICIOUS

PDF

70.8 KB Created: 2021-02-13 16:32:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7b436cba0643903a4bab9aa1aaba806d SHA-1: f209b252db2278d57ddd74c4e7081763fb41c4c5 SHA-256: 2c858b832dfda742c48db9458aded0c96f014605c7f606a8cf8c268c67d0b8d6
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=windows+media+video+download PDF link annotation
    • http://ca-management.website/dezesojogonawabugetasey21f8.pdfIn PDF document text
    • http://naturfresh.fun/samsung_pay_apk_for_galaxy_watch6pr1k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385009/normal_5fed4262353dd.pdfIn PDF document text
    • http://lesedidunug.22web.org/42700559319.pdfIn PDF document text
    • http://itawegan.space/6834477096199lwo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465007/normal_60090bb34fc9e.pdfIn PDF document text
    • http://mebel-albero.ru/network_marketing_syllabus9hjbn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366008/normal_6002e6e748d45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391319/normal_6012976544cdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454808/normal_5fd9331c16b1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377371/normal_5ff8c5fb6119e.pdfIn PDF document text
    • http://it50disconto.info/executive_summary_report_template_freeuhm91.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/bokowababolemamaxn95.pdfIn PDF document text
    • https://bufuduvo.weebly.com/uploads/1/3/0/8/130874305/ginozuzoxiw.pdfIn PDF document text
    • https://valiwuvubeke.weebly.com/uploads/1/3/4/6/134694219/0a4bbb8b9e.pdfIn PDF document text
    • http://onlinetiser.website/83843346188ws2zc.pdfIn PDF document text
    • http://jotipire.iblogger.org/65215950494.pdfIn PDF document text
    • https://xadidevoki.weebly.com/uploads/1/3/0/8/130873902/kakonefur_xolikixijezib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379612/normal_5fda1130f33fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ruwapebubori.epizy.com/air_fry_britania_pro_saude_manual.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_off0000da3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3F 5040 bytes
SHA-256: 980093deb8b5e9beaebd6f12bdc877ffeed7808867317e90a003ad9e36b3f2d2
font_01_sfnt_off0000eb6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6B 10156 bytes
SHA-256: c2c727ebc6f24b60c06bbd111a345632d07c44fcae6706c6e19f883564fa7de3

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