Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afc97c8e2aeeb22…

MALICIOUS

PDF

583.1 KB Created: 2022-04-17 12:09:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a69953dc03d402a8269302ffc68b75ab SHA-1: a1e5dff94a070a6181eef2326f9e61553336d316 SHA-256: 4afc97c8e2aeeb22170d2f2072b2e7e552160a0edf89044dcedc716a4a9df507
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that contains embedded JavaScript and a high-confidence heuristic firing for a redirector link. The redirector URL, https://yubit.co.za/XSRYdR1H?utm_term=art+website+templates+free, is used in a "free-download phishing" lure. The embedded JavaScript likely facilitates the redirection or further malicious activity. ClamAV also detected this file as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4047

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=art+website+templates+free PDF link annotation
    • https://nirmalamathachurch.org/cms_uploads/image/file/lokidolozixudugo.pdfIn PDF document text
    • http://mediasingrid.com/js/new/fckeditor/userfiles/file/jumukewamoroteduzibad.pdfIn PDF document text
    • http://arte-salon.ru/upload_picture/simofip.pdfIn PDF document text
    • http://yachtandgulet.com/userfiles/file/24441500816.pdfIn PDF document text
    • https://gsacademy.ge/uploads/files/78233075597.pdfIn PDF document text
    • https://getaforufuzok.weebly.com/uploads/1/3/4/7/134733873/dalugirijaluwe.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/54503328275.pdfIn PDF document text
    • https://pizeposinejuxow.weebly.com/uploads/1/3/2/6/132695365/wimofisiboguna.pdfIn PDF document text
    • https://loveriremuro.weebly.com/uploads/1/4/1/3/141383626/kofofitifaneka.pdfIn PDF document text
    • https://lopiranurepo.weebly.com/uploads/1/3/4/7/134735856/badonupekoditun-nimejawuralozag-mamesopafo-xovosixadovej.pdfIn PDF document text
    • https://ckfinder.pamlskovnik.cz/ckfinder/userfiles/files/nijomoxefowoduso.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16203adb032697---46330376743.pdfIn PDF document text
    • https://zakazorexan.weebly.com/uploads/1/3/1/4/131407051/3317330.pdfIn PDF document text
    • https://govovoladadivaz.weebly.com/uploads/1/3/5/3/135304945/rufesivewimed.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/ponav.pdfIn PDF document text
    • http://basumati.com/app/webroot/ckfinder/userfiles/files/6822407406.pdfIn PDF document text
    • https://taboloralo.weebly.com/uploads/1/3/2/7/132741194/nilakesuredipowopeb.pdfIn PDF document text
    • https://degiveku.weebly.com/uploads/1/4/1/2/141297756/romelomiwagevo.pdfIn PDF document text
    • http://lianbang123.com/uploads/files/202203161419232616.pdfIn PDF document text
    • http://plenerowe.kbo.pl/files/file/39944819536.pdfIn PDF document text
    • https://novomegaweg.weebly.com/uploads/1/3/4/7/134738931/190519.pdfIn PDF document text
    • https://www.cuadernosmanchegos.com/panel/cuadrodemandos/assets/ckeditor/kcfinder/upload/files/zawufitabo.pdfIn PDF document text
    • http://mt-filtration.com/uploaded/file/1652487298622b9056ec863.pdfIn PDF document text
    • https://hippodrome-compiegne.fr/www/uploads/file/riludeje.pdfIn PDF document text
    • https://mozufosanid.weebly.com/uploads/1/4/1/3/141398294/latenawuxalugeru.pdfIn PDF document text
    • http://gabriel-beta.boulangerie-ange.fr/imgfr/files/karofofes.pdfIn PDF document text
    • http://aleksandriya.topmebli.com/content/xuploadimages/file/84644145678.pdfIn PDF document text
    • https://www.tyrtaios.gr/ckfinder/userfiles/files/47476947757.pdfIn PDF document text
    • https://bubamixidik.weebly.com/uploads/1/3/4/6/134657394/wijurelozage.pdfIn PDF document text
    • https://judorobizud.weebly.com/uploads/1/3/4/4/134455398/c25cc3dfdf25.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622c6bc13c8d4---xomewuzeleturut.pdfIn PDF document text
    • http://bep-au-cong-nghiep.theonejsc.com/userfiles/file/mufifiwuj.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0008ab16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB16 19100 bytes
SHA-256: 31df1e0a082b8c6755b85c76cf687a31736681f94cf2f0bf91ccdb1ab9b23ac4
font_01_sfnt_off0008dcf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCF5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0008f50c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F50C 10500 bytes
SHA-256: 7760ba2d08e548bca3030ebbd951519644f067dba6cb961c357c48bdcf081fbf