Malicious PDF — malware analysis report

Static analysis result for SHA-256 172f4573d416db6d…

MALICIOUS

PDF

63.3 KB Created: 2021-02-12 23:58:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 74c9e061d320f6993f8e8b32287bf363 SHA-1: ea25e5c97e1c04b6bf436e823d7b8be7ada479b6 SHA-256: 172f4573d416db6de354aae10a55783d96777f147a0836bede2e273068ac9fd1
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://leonvi.ru/wix?keyword=pearson+envision+math+login PDF link annotation
    • https://cdn.sqhk.co/buvaboda/JBrjgie/at_t_protech_cost.pdfIn PDF document text
    • http://nibelv.xyz/bikudeduruvumelic0p12.pdfIn PDF document text
    • http://amin-ukraine.net/refopoo8wop.pdfIn PDF document text
    • http://jumpfs.space/fishing_report_texass7gwn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380379/normal_5fff12059648a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371244/normal_5fed43689065f.pdfIn PDF document text
    • http://xtw2.club/7257211302487mjj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484370/normal_5ffe0b471ae9b.pdfIn PDF document text
    • http://souve.me/390069351775f40.pdfIn PDF document text
    • https://cdn.sqhk.co/zipirevofu/dbgjsQj/greatest_hits_of_the_80_s_love_songs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497095/normal_5feb48b3dfb18.pdfIn PDF document text
    • https://cdn.sqhk.co/xekixuzurim/chcjejc/transport_tycoon_deluxe_download_dos.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/sosupejuxofedo/lopuvegatefobudazonenolas.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/vamotuwosomixediwotowefe.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/75223199475.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/coursera_app_for_laptop.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/annamalai_movie_songs_in_masstamilan.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_off0000ba4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA4E 5160 bytes
SHA-256: b777c298c7d247b7774843ae7705d02734c063426b8cec03d09f3d76049c4dc9
font_01_sfnt_off0000cbbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBBD 10748 bytes
SHA-256: ab5c7a3fb08ab3b2c2be56593f7c298b980fea185fca7c4fe747ab1829b23877