Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fa74e377ef4e205…

MALICIOUS

PDF

67.6 KB Created: 2021-02-21 08:38:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d3e966b5fda4166e588a66fe2a43b21c SHA-1: ac973ececf198ca3e0c6ff9ee29d2838536345c4 SHA-256: 4fa74e377ef4e20540ab8dda70834b076c74859e9c95604b59d9b434067848da
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://jacksth.ru/wix?keyword=plate+tectonic+crossword+puzzle+answer+key PDF link annotation
    • https://cdn.sqhk.co/rewazexi/2jhcpjg/xobodadogepe.pdfIn PDF document text
    • https://cdn.sqhk.co/badisasi/iaBm2a6/dugekazevezevona.pdfIn PDF document text
    • http://gudituxubimof.22web.org/html_template_creator_online.pdfIn PDF document text
    • https://cdn.sqhk.co/sepovili/rxZgfjg/funny_meme_stickers_for_whatsapp_iphone.pdfIn PDF document text
    • http://wogigafulokeme.22web.org/6462111580.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453764/normal_5fee7523e7fb3.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/viwoxuz/ads_remover_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/budgeting_format_excel.pdfIn PDF document text
    • http://jejomozukiro.rf.gd/are_all_garmin_chargers_the_same.pdfIn PDF document text
    • http://kelelonuw.epizy.com/wigavomusexevibol.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/disputing_credit_report_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/79582122306.pdfIn PDF document text
    • http://jojexapopexevof.epizy.com/29155361733.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/94169872290.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_off0000ccc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC7 5376 bytes
SHA-256: cc1777c4713825feecc785faa6768bee1e6cb2e98414314b2ddecdebc8d38b37
font_01_sfnt_off0000df42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF42 10016 bytes
SHA-256: 8c6d748f2c9b487cc76ba9476ab9a9a70a4c4f0b3ea5b14879ff16aec33a7c75