Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb0779339249f23e…

MALICIOUS

PDF

72.1 KB Created: 2021-02-16 19:37:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 06b76e632a35decd8e2e9aeedeffedc6 SHA-1: 564ed00df9098fb289c0cf1219d83f8779b319fb SHA-256: fb0779339249f23e1aaf1e4af24a90ec67f4d7535734873cc8110d01f4ae8a69
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/wb?keyword=sermon%20outline%20pdf%20free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370090/normal_5fc7b58c79ebd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483608/normal_60264ccf5ea01.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/cb4ghye/f1_tv_coverage_belgium.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4528915/normal_5fcbd8960591b.pdfIn PDF document text
    • http://lodujenoxo.iblogger.org/bertazzoni_microwave_manual.pdfIn PDF document text
    • http://all-system7.xyz/sosa_arabic_font_for_autocad_free7iqdj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461525/normal_602169f056595.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/23928592654t1o3h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462697/normal_6000f51dd0e6a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474999/normal_5fde088f53c80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375194/normal_5ffb311d92446.pdfIn PDF document text
    • https://cdn.sqhk.co/pobumepova/ggf5ljf/college_football_championship_games_last_10_years.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468551/normal_6000f231ab026.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404116/normal_601eed2d61a13.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gotikomerutoj.rf.gd/jaxasuxit.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_off0000dd4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4B 4904 bytes
SHA-256: 8d807bba0c5e193d012c52093a1d21ac273fde23f0bc09b6e93cb161c2dd5a52
font_01_sfnt_off0000ede4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE4 11096 bytes
SHA-256: cbe13c9034d17ee3074a371894676caa297d0b76837903ef29d32fe417cd3dc7