Malicious PDF — malware analysis report

Static analysis result for SHA-256 d930c50ce97bef3b…

MALICIOUS

PDF

73.7 KB Created: 2021-02-15 07:58:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d2677dd5b6c6d6cabcc9bf5f5349a918 SHA-1: 18ef4c862ff4f1c135c016c74d707849edadd81a SHA-256: d930c50ce97bef3b63f861f25f8148d34385633723a5f56f3af6e9ec7a9c4888
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/123?utm_term=how+does+the+cerebral+aqueduct+function PDF link annotation
    • https://cdn.sqhk.co/zerurukoraju/uijghgx/lost_vikings_2_snes_passwords.pdfIn PDF document text
    • https://cdn.sqhk.co/dixufeja/hc70WNJ/star_wars_jedi_challenges_multiplayer.pdfIn PDF document text
    • https://cdn.sqhk.co/joxesinejag/sichgmE/15714990813.pdfIn PDF document text
    • https://cdn.sqhk.co/fokolamezo/wSfR4jf/intercooler_turbo_price_in_sri_lanka.pdfIn PDF document text
    • https://cdn.sqhk.co/fokudiwun/uZNBhf8/street_racing_3d_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/naxibibu/gdc0Psi/sky_warrior_theater.pdfIn PDF document text
    • https://cdn.sqhk.co/besimiwi/jh9wWmY/vulidaralaze.pdfIn PDF document text
    • https://cdn.sqhk.co/jomutepe/ihzenjh/text_twist_cheat_unscramble.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/9Xhh3ge/idle_rabbits_save_the_world_free.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/je0vihj/25147350284.pdfIn PDF document text
    • https://cdn.sqhk.co/feduminaro/cgeSyGU/58209281125.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/euZqiin/glory_road_movie_trailer.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/pexodugosa/birthday_banner_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/naval_architecture_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/43140767433.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/37801977553.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/html5_video_coming_soon_template.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/embedded_questions_practice_worksheets.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_off0000e4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B0 5428 bytes
SHA-256: 9ea957a28770d7e8c9feab5f412a34eff514139ff1902ca2047a1d07b92d745f
font_01_sfnt_off0000f72f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72F 10148 bytes
SHA-256: 6b621150921517aa35a5201f9e16706a0c8c73a9054e2c088e26ed3712aa7cea