Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d45bbfce7a7be8…

MALICIOUS

PDF

64.8 KB Created: 2021-02-19 14:38:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 06c41a81a0d02222b3ce70906e2ec48a SHA-1: 3c89f84450093b402553b0b82fcd612e69421f9b SHA-256: f7d45bbfce7a7be8ca07dafa5dc1987c5d80ce320622a5d1ec79fe7ac1db742a
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=pennsylvania+traders+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377938/normal_6018da7cbd0c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416513/normal_602ef872146fc.pdfIn PDF document text
    • http://pitushok.fun/rawuj7zc3q.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/g3jdUgg/44808029284.pdfIn PDF document text
    • https://cdn.sqhk.co/wosepimi/bduT2ha/20935136909.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425929/normal_6022da4cec2e5.pdfIn PDF document text
    • http://triple-doska6.club/insaniquarium_deluxe_free_full_version_downloadsrb8m.pdfIn PDF document text
    • http://leaninrzpd.site/city_of_stars_sheet_music_musescoretrtmn.pdfIn PDF document text
    • https://cdn.sqhk.co/wudarivat/jgwhar2/candyman_movie_1992_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/rularijulen/Ugf8whf/megamind_cast_space_dad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388620/normal_600fd6560822b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452861/normal_5fd61c50a666e.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/seriposuj/wawaj.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/officer_badge_template.pdfIn PDF document text
    • https://s3.amazonaws.com/natewared/last_version_of_instagram_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/jesowikuvupumuji.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_off0000c159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC159 5156 bytes
SHA-256: b02483c45f89718f81ac8ddb436c0408a767087f2ab3bf044ee2a11739ec1c0a
font_01_sfnt_off0000d301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD301 10440 bytes
SHA-256: 4c60c9c30f71a5babc6ff0f9ca49c8fd4a897b74dc05f79fdb3ced7a188a6e31