Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df3fba8e80c7df9…

MALICIOUS

PDF

72.3 KB Created: 2021-02-26 05:33:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6fe4bffb4cec98d853f8373f7a57caf8 SHA-1: 94eebb1f8502dad7be914fe80ec5f619d85d7c35 SHA-256: 6df3fba8e80c7df9382bfa657c7384f72c8258f7184de1442aa5212ad1f1e218
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/award?keyword=how+to+configure+swann+dvr+for+remote+viewing PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470029/normal_5ff5dc7f41e56.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413862/normal_5fcb906c09b85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480748/normal_5ffcc2a902810.pdfIn PDF document text
    • http://mowuvivof.22web.org/zibif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410002/normal_601562cd0403e.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/gjjasjf/tejabojuwedajanape.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/cjejfN9/tomb_raider_movie_sequel_news.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454277/normal_5fdefc1d902c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491926/normal_5fef66d895e78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418991/normal_6000a4e8aa7f9.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/xifabilejilab/80925403311.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/27759162821.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/coronary_artery_disease_diagnosis_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/seruzolu.pdfIn PDF document text
    • http://rolonitefokive.rf.gd/ashbourne_community_school_application_form.pdfIn PDF document text
    • http://bemeridalazobox.epizy.com/91404614796.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/boiler_control_system_engineering.pdfIn PDF document text
    • http://tamuluworab.rf.gd/jedikewezarigemafasan.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/aashiq_banaya_aapne_movie_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/caracteristicas_y_tipologia_de_los_derechos_humanos.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/napowujagosa.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_off0000dc31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC31 5424 bytes
SHA-256: 051e766fc253c9bdacaef72c977ac827ba4aee6a8b30bc8993f08552554e268f
font_01_sfnt_off0000eeae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAE 10304 bytes
SHA-256: 30cd1559542e4b86a066fe1bfbccae3e38fc40b03fc6f1fd4107702016fb257b

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