Malicious PDF — malware analysis report

Static analysis result for SHA-256 319bf93af2c43a02…

MALICIOUS

PDF

69.4 KB Created: 2021-02-24 05:45:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6ade2e783ff718baed405ca1147c6ace SHA-1: 029f1f4433d36e8fbe8897324901a339662cab1a SHA-256: 319bf93af2c43a0291220ed100fcae2955e3dc77373eecfca975811b09167efa
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://bologen.ru/wix?keyword=nebular+theory+worksheet PDF link annotation
    • https://cdn.sqhk.co/zejejofe/ibhfg9k/hmrc_vat_refund_form.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404520/normal_5fc59bfeb48f9.pdfIn PDF document text
    • https://cdn.sqhk.co/potiribuwuf/5nI7S6g/gipirajat.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/iOE4ia1/dv_lottery_photo_crop_tool_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/fubafonu/66hiUig/microsoft_teams_for_apple_macbook_air.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455901/normal_5fd09aacbb632.pdfIn PDF document text
    • https://cdn.sqhk.co/dizoketa/lgfhfij/24741182167.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/5hjjAif/custom_gun_simulator_3d.pdfIn PDF document text
    • https://cdn.sqhk.co/figakeves/1zy6fpb/homer_simpson_soundboard.pdfIn PDF document text
    • http://sevetoxagejip.iblogger.org/paperboy_audio_naa_songs.pdfIn PDF document text
    • https://cdn.sqhk.co/wupofolizaj/dibhfkM/45650755728.pdfIn PDF document text
    • https://cdn.sqhk.co/fubafonu/Q5qjjz7/microsoft_bookings_multiple_attendees.pdfIn PDF document text
    • http://zijogodakenanaf.22web.org/31097003859.pdfIn PDF document text
    • https://cdn.sqhk.co/tibatojo/ViiifDY/ucraft_mobile_wiki.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/datarofapakil/13741580419.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/mining_leveling_guide_ffxiv_50-_60.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_off0000d3d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D2 5140 bytes
SHA-256: cbbac8f4fa6b369a6f6f46de473b0ca210bda377e673895efa80a382fa166cb6
font_01_sfnt_off0000e55e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE55E 10424 bytes
SHA-256: c56e98722209ff6d2ad31dd00cbdba1732989b950ddd63ce9ead7f4c388d9ca7