Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b6c83b67efcb05…

MALICIOUS

PDF

667.4 KB Created: 2022-02-03 09:54:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 32def69655010d9f294837eab93efd3f SHA-1: 42f52386bcc9fc13e1809683c27a20a9adbf6f78 SHA-256: 88b6c83b67efcb05d1d4a0fbc2a77d59e1c2841ef1c527819ed027e76d5ee883
134 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3456

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://yubit.co.za/XSRYdR1H?utm_term=current+derogatory+trade+information PDF link annotation
    • http://partnercable.hu/files/fetimowiwokotudajidikebik.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160f9f6ed820a8---85510564882.pdfIn PDF document text
    • http://bandwidth.aryanpalace.com/userfiles/file/fejajojataronezez.pdfIn PDF document text
    • http://gaihekitoso-nagoya.jp/upimg/files/pukabotalarozevan.pdfIn PDF document text
    • https://olafree.gr/admin/images/narebesugosi.pdfIn PDF document text
    • http://evaemlak.com/userfiles/file///noxumokujobolozusulapeg.pdfIn PDF document text
    • http://bigxra.com/uploadfile/file/2021072404135073499.pdfIn PDF document text
    • https://binarbaidrealestate.com/public_html/userfiles/file/13506444690.pdfIn PDF document text
    • http://ncpvs.gov.np/public/kcfinder/upload/files/fijikizulosawovobox.pdfIn PDF document text
    • http://klimagra.pl/images/wysiwyg_img/file/tiwowi.pdfIn PDF document text
    • http://ccadl.com/files/20211201044117.pdfIn PDF document text
    • http://fundacionecla.org/resources/original/file/29965548242.pdfIn PDF document text
    • https://estduquebec.com/scripts/php/xenocode/lib/ckfinder/userfiles/files/30365440637.pdfIn PDF document text
    • http://project4power.pl/file_store/mosanusomufetifu.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617a9e7eadb4d---gowaroxefori.pdfIn PDF document text
    • http://lavalnerina.it/userfiles/file/19113932841.pdfIn PDF document text
    • https://bouveau-consulting.com/userfiles/file/zegodigafagamu.pdfIn PDF document text
    • http://hometextiles-consultant.com/ckfinder/userfiles/files/9534529501.pdfIn PDF document text
    • http://peakpromotionnepal.com/backup/public/ckeditor/kcfinder/upload/files/60917225238.pdfIn PDF document text
    • https://www.adoz.cz/ckfinder/userfiles/files/4032571563.pdfIn PDF document text
    • https://sofupingame.com/calisma2/files/uploads/92205413696.pdfIn PDF document text
    • http://plan.msu.ac.th/ckfinder/userfiles/files/53480063489.pdfIn PDF document text
    • https://wilde-signs.com/media/wudorigesurapapi.pdfIn PDF document text
    • https://badoza.net/userfiles/file/35052122710.pdfIn PDF document text
    • https://doan295doson.vn/namthuan/images/news/files/sanamonalositafiba.pdfIn PDF document text
    • http://santeh.md/img/files/58215229162.pdfIn PDF document text
    • https://vientangluc.com/upload/files/duboraxukedokuperedoxezo.pdfIn PDF document text
    • http://thebookmarkcafe.com/uploads/files/miwekixaputosiradogama.pdfIn PDF document text
    • https://bk.elbasyacademy.kz/vendor/admin/kcfinder/upload/files/dajanomezoziduwet.pdfIn PDF document text
    • https://cochleartudaskozpont.hu/files/gaxupelutuxidezelivopo.pdfIn PDF document text
    • http://csaladiegyteruautok.hu/userfiles/files/97603492019.pdfIn PDF document text
    • http://emirates-offshore.com/uploads/image/file/80421725363.pdfIn PDF document text
    • https://mannerfeltdesignteam.se/ckfinder/userfiles/files/78901247431.pdfIn PDF document text
    • http://enjoy.sk/editor_uploads/system/files/beveninabovavatez.pdfIn PDF document text
    • http://sartor.ru/upload/files/4624050099.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off000a0174.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000a0174.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000a0174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0174 10728 bytes
SHA-256: bf519b316ca7a4d69e1f2ce07ab43ebe99e878fb8cf78e1c8f96914898a0529d
font_01_sfnt_off000a19ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA19EC 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000a3107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3107 16264 bytes
SHA-256: 455721d1ddcdde247e04fbebeebb89414aabc09767f8df84f157895527fc246e