Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b3cde3ab6cca4ab…

MALICIOUS

PDF

71.2 KB Created: 2021-03-07 04:48:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b3feeb0c3541957f4d78dbef1b577599 SHA-1: 1e285fcbad18f2735a2049a42d4f09a3e7428d6f SHA-256: 6b3cde3ab6cca4aba5747085a705116f5dfd5d904dd06417272532d7119b8a55
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://midufefew.ru/award?keyword=how+to+setup+blackmagic+intensity+shuttle+thunderbolt PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375521/normal_60303be375811.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454286/normal_6033ba41f395e.pdfIn PDF document text
    • https://cdn.sqhk.co/fefowofuk/jbggiii/safari_2020_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489588/normal_5ff235f046876.pdfIn PDF document text
    • https://cdn.sqhk.co/jimikafede/3mKjfha/tokaido_matsuri_expansion_review.pdfIn PDF document text
    • https://cdn.sqhk.co/nufanusiki/G6cijic/baked_keto_cheesecake_recipe.pdfIn PDF document text
    • https://cdn.sqhk.co/zumiredosuwi/tjiw23O/gotijazurojo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402280/normal_6026f058bac97.pdfIn PDF document text
    • https://cdn.sqhk.co/kugugofawaz/DiggUgg/50715503029.pdfIn PDF document text
    • https://cdn.sqhk.co/femuzetoj/igrjija/crash_course_world_history_6_worksheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470020/normal_5fc5848a03e82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370062/normal_6008757cd57f3.pdfIn PDF document text
    • http://vukuwupevipe.iblogger.org/36735666773.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/bidivo/kexelozufoza.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/house_rent_receipt_format_download_for_income_tax_exemption.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/angular_6_file_from_server.pdfIn PDF document text
    • http://rosukijabadizi.epizy.com/47200481981.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/foscam_fi8910w_reset_password.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_off0000d6e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E2 5848 bytes
SHA-256: 22e65d16ffbc63fcd882e9efac67ac7209451f1f0365eeb7e3c39f35aaa24885
font_01_sfnt_off0000eaaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAA 10812 bytes
SHA-256: f9de267797f485d1affdb6eea1dd323b75cd708d61e7a8b44d62b3a88493bc88