Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b5e12fb93c24dc4…

MALICIOUS

PDF

74.4 KB Created: 2021-03-01 06:47:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 326d70c978c05b5a6c337175f419e6e1 SHA-1: 5dffc6b7a8957a5697890da2f78007b58657e03f SHA-256: 2b5e12fb93c24dc4ac35380c8d1c181cd11630a5c62dc7cd99bfe8abfe42805a
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://jumiwimov.ru/123?utm_term=art+history+jobs+near+me PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4468537/normal_5ffde0d1990cd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381529/normal_5fee7e83eca0b.pdfIn PDF document text
    • http://minuette.me/black_and_decker_air_fryer_convection_oven_reviews52yvj.pdfIn PDF document text
    • https://cdn.sqhk.co/ponajadu/Tk5hdjg/hatsune_miku_tap_wonder_songs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408186/normal_5fdb6013e383a.pdfIn PDF document text
    • https://cdn.sqhk.co/mixubiki/x6MhcYd/80649266123.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_602ea6c9932a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481271/normal_5fe0e33e985f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379043/normal_602d0eb8be4ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443814/normal_5fedf2ceedcf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471723/normal_602c3a367c964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485448/normal_6027e9cabe799.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484126/normal_5ff2d70d8d54a.pdfIn PDF document text
    • https://cdn.sqhk.co/difejekexe/jfKgdhb/11923039866.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426687/normal_600eaa0cb138c.pdfIn PDF document text
    • http://gratoram.site/kadiwepadutiwidafor9tgjs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488141/normal_601cdd7abbad4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369173/normal_60122816d98cc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE670 5200 bytes
SHA-256: d5688d52b63634068ae4f9d27d3fd63115ec4127eb1c1bd231a610ef9747a7a9
font_01_sfnt_off0000f800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF800 10808 bytes
SHA-256: e6824ef01347d845ac13d7c81a59a55f2d678f50eca8f49dccbfb1f8a8c493b7