Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3e1b83f1130c3ef…

MALICIOUS

PDF

68.8 KB Created: 2021-02-16 18:01:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 392be67d51b8bebbb43defac34525328 SHA-1: a8c582defe9c308962e08ff737d5ce21c47e2ef7 SHA-256: c3e1b83f1130c3efd75b11aa59545bba7838ba3f5d2070bd6598634b48b12077
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://baarspo.ru/wix?keyword=christianity+for+kids PDF link annotation
    • http://domainlimax.xyz/mytaxi._ph_inc_contact_numbermbxeq.pdfIn PDF document text
    • http://particuliers-societegenerale.xyz/troy_bilt_horse_tiller_warrantyfft6w.pdfIn PDF document text
    • http://immortal-sho.club/autodesk_sketchbook_shortcuts_androidtgifa.pdfIn PDF document text
    • http://weareanonymous.org/tosijibulujanivil6jffm.pdfIn PDF document text
    • http://verification-help.business/software_development_gantt_chart_template_excelcnak5.pdfIn PDF document text
    • http://podarokinsta24.online/abas_erp_handbuchjqc8e.pdfIn PDF document text
    • http://alcexpress3.xyz/gigomadutarovafilz7wr.pdfIn PDF document text
    • http://springwin.space/cool_nail_art_designs_to_do_at_homeui3m8.pdfIn PDF document text
    • http://shoop-fm.ru/equalizer_bass_booster_apkqz9hr.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/lanorolowu/buxazobanunuvejuga.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/33689557729.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/flyff_blade_build_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/jail_warder_exam_2018_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/what_is_a_visual_representation_of_information.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/barbie_dreamhouse_adventures_full_episodes.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_off0000d1a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A4 5032 bytes
SHA-256: 3e4d4b20c6cc0766106dffc9e03042ffdc25eb0a0f7829c4127c3d6706369362
font_01_sfnt_off0000e2bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BD 10596 bytes
SHA-256: f0ff059b89b4918350bf459bebea1a0a07bc84ba3fb19da8e5fdc3a963787944