Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff0180afdef51ccd…

MALICIOUS

PDF

68.2 KB Created: 2021-02-15 16:22:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d3ede73936ef0b98a9be30a8ff104cf4 SHA-1: aa068ff9836642ed1d26f7c8d17ca7a0149bf875 SHA-256: ff0180afdef51ccdee064692911d4366d9d1b7660c83b3baff66f4f19f7bac58
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/123?utm_term=books+to+make+text+to+text+connections PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484356/normal_5fd77166b0702.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426271/normal_5ff634fbb2ad6.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxobenona/bdhfhbn/std_10_result_2020_august.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/gS2DCji/xofut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448357/normal_5ff6a7eb29746.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393033/normal_6011d23a4a2f7.pdfIn PDF document text
    • https://cdn.sqhk.co/xexerekija/djgiaER/paintball_gun_parts_diagram.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404740/normal_5fd3698c78fba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415946/normal_5ff7c989761a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379384/normal_6011e87550530.pdfIn PDF document text
    • https://cdn.sqhk.co/kusamika/iHiejfd/emoji_smile_cute_themes.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/jazofi/competitive_examination_questions_and_answers.pdfIn PDF document text
    • http://ribaxexumipo.rf.gd/wugobafako.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/puxezogasumos.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/voiced_and_unvoiced_sounds_list.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_off0000cf59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF59 5000 bytes
SHA-256: 4daa1def556beab27a64f5deffe8d2bde7732382c38fa38e0d4d451684192aff
font_01_sfnt_off0000e04e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04E 10432 bytes
SHA-256: edaf834fa69c39b1a4353fd4b6db0ce3b25a183e85119816a871f790853decb4