Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ea2a9c1a16f472…

MALICIOUS

PDF

74.8 KB Created: 2021-02-07 15:39:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 188c03f634a29f35234cb97ee1332e14 SHA-1: 23b63a25d176778bec8be5d617581e7026343b9c SHA-256: 07ea2a9c1a16f472710b8547094a32e2318d947cff0f43cb32c31035c3e50a47
136 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
  • 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/wb?keyword=statistics%20terms%20and%20definitions%20pdf PDF link annotation
    • https://cdn.sqhk.co/pedagukar/ibgc2hh/forgotten_realms_books_drizzt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459466/normal_600f5186a5102.pdfIn PDF document text
    • http://korsabarca.com/public_finance_rosenilobv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367627/normal_5fe5386953e33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_5fd9083b1b3f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376629/normal_5ff69ea8eeac2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378607/normal_5ffc70074bd41.pdfIn PDF document text
    • https://cdn.sqhk.co/tilomulobet/hehjm8T/thumbelina_original_story_summary.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/ZMlgc7X/siwisifixedejutofowade.pdfIn PDF document text
    • https://cdn.sqhk.co/pulobegefuzi/iiTgi6r/fuluz.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/kofabube/31360494028.pdfIn PDF document text
    • http://tiriburud.rf.gd/neripakudalomufemadeta.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/12648314358.pdfIn PDF document text
    • http://rogidisili.rf.gd/form_for_canada_visitor_visa.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/vebom.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_off0000e4ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EF 5372 bytes
SHA-256: e58b10630569b9e0bb2c7a1d980732f70ca05eab8e4deabb0629574a05e1300f
font_01_sfnt_off0000f722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF722 11484 bytes
SHA-256: 72a99e895fcd7d012eb2d8eea3d3eef173394d107e4feeb85f909dc5a60bb4a7