Malicious PDF — malware analysis report

Static analysis result for SHA-256 65edc17675d4254d…

MALICIOUS

PDF

72.1 KB Created: 2021-02-20 10:58:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 09a12c42b2098cc6561b7ff46aa1e2b0 SHA-1: 902b0af97025c1d7e8d66685abdfc8549d82af4c SHA-256: 65edc17675d4254d1e4a3696e2db016bfc27468131f31d6b7b8a8c21cea00d4b
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/wix?keyword=iptv+smarters+apk+download+pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419826/normal_600eab7b844e7.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/jjqjcgg/56680848016.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411681/normal_600073ca9222e.pdfIn PDF document text
    • https://cdn.sqhk.co/nixivezez/HBigfgC/ice_princess_2_cast.pdfIn PDF document text
    • https://vonewujin.weebly.com/uploads/1/3/1/3/131380349/1dcff4f1be98e4.pdfIn PDF document text
    • https://resawipodejevi.weebly.com/uploads/1/3/0/8/130814711/e6d99927d6468.pdfIn PDF document text
    • https://tenewalewufubin.weebly.com/uploads/1/3/5/3/135329800/a49dc81a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468530/normal_60226c0d22851.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/wewiro/98080769255.pdfIn PDF document text
    • http://mujunuge.rf.gd/financial_reporting_system_in_bangladesh.pdfIn PDF document text
    • http://jisizulo.rf.gd/specialized_speedzone_sport_wireless_sensor_battery_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/74886347899.pdfIn PDF document text
    • http://fefekug.rf.gd/observe_and_report_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/chemistry_aptitude_test_questions_and_answers.pdfIn PDF document text
    • http://ruwiluleter.epizy.com/free_to_word_converter_freeware.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/surinedozonejaxefomawe.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/calcutta_university_b._ed_application_form_2019.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_off0000d6f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F1 5372 bytes
SHA-256: c1d6bf5e38613cccbc0768e82b0a43c8b3937dacb1102a29a48f2b3f400ca62b
font_01_sfnt_off0000e934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE934 14808 bytes
SHA-256: af4b7e9dd9480d60dcbd21bb9f6e4953fe0869522612c834f444d8ba20d87404