Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9c5d21d8a93c42b…

MALICIOUS

PDF

343.0 KB Created: 2022-03-27 11:30:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-27
MD5: e31636826193488d62d995d2bc3f664b SHA-1: 1d75383ef0037df6c3c201961f7aaf4f98d5a9a1 SHA-256: a9c5d21d8a93c42b42ecb090b77de6d5843247fa8342746d5c10c6da577ec0a4
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7480

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
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://wirut.co.za/XSRYdR1H?utm_term=you+say+run+boku+no+hero PDF link annotation
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/8tvpspaodj4bd8gv9uta18bbpb/zisidunijipufi.pdfIn PDF document text
    • https://nayyaralidada.net/alpha/ckfinder/userfiles/files/tebumudegitufixelam.pdfIn PDF document text
    • http://dilimkebab.com/userfiles/file/xalijo.pdfIn PDF document text
    • https://arenerachicamocha.sinecsas.com/ckfinder/userfiles/files/30044054962.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/92205353029.pdfIn PDF document text
    • http://mertcelikkapi.com/userfiles/file/92726790282.pdfIn PDF document text
    • http://ranaghatpchsschool.org/userfiles/file/gukavixipibazajajiwif.pdfIn PDF document text
    • http://nhathuocphuclinh.com/upload/files/50557025368.pdfIn PDF document text
    • http://sameiroeventos.pt/ficheiros/mewujizefuxifov.pdfIn PDF document text
    • https://pezenasenchantee.fr/userfiles/file/medazerejaze.pdfIn PDF document text
    • https://anfauglir.com/images/file/79050237014.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1622932f3961b2---musowujafosaxozuzogepo.pdfIn PDF document text
    • http://bedrucken24.de/userfiles/file/jifube.pdfIn PDF document text
    • https://ulicetwojegomiasta.pl/kcfinder/upload/files/wibifebavojivafibilogoko.pdfIn PDF document text
    • http://kant21.com/userData/board/file/nosevezolaforaneruwuj.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16229926c9e8c2---91702851637.pdfIn PDF document text
    • http://hmconcretemixingplant.ru/d/files/limunedigikuvewakilav.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/sovavogeg.pdfIn PDF document text
    • http://rdasesores.gestconcursal.com/editor/ckfinder/userfiles/files/verulegirij.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/u1c7jdupn0cmvi7ifg2vnc8i3h/xawikamidakasodufafakezip.pdfIn PDF document text
    • https://www.caissedesecolesdu5eme.fr/backoffice/ckfinder/userfiles/files/56942890446.pdfIn PDF document text
    • https://csn-alliance.com/data/files/nexuvaneza.pdfIn PDF document text
    • http://safarang.com/basefile/files/37005945211.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/00b2ee180ddb90958807ef83935ab01f/xetulel.pdfIn PDF document text
    • https://inkxds.com/userfiles/file/53519252914.pdfIn PDF document text
    • http://nurugelexport.com/ckfinder/userfiles/files/63240388929.pdfIn PDF document text
    • http://pusat.wellcomm.co.id/assets/kcfinder/upload/files/89557347436.pdfIn PDF document text
    • https://tootooair.com/FileData/ckfinder/files/20220204_5A1E5392475A264B.pdfIn PDF document text
    • http://mpti.ru/userfiles/file/16262858119.pdfIn PDF document text
    • http://cttinteriery.cz/files/upload/files/99618439909.pdfIn PDF document text
    • http://ing-triplee.com/ckeditor/kcfinder/upload/files/28608740242.pdfIn PDF document text
    • http://brenderup.ro/mm/file/67631950645.pdfIn PDF document text
    • http://tprcindia.com/ckeditor/ckfinder/userfiles/files/wozaz.pdfIn PDF document text
    • https://garmin10.ddbseven.cl/userfiles/file/35950253947.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_off0004ef4d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004ef4d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004ef4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EF4D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00050668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50668 17812 bytes
SHA-256: f36bcb62f173c9fb565d2ae594907bddf38426ee3c102a0659dce1cb86dbc88b
font_02_sfnt_off00053508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53508 10400 bytes
SHA-256: d80cd2272ae3d552ecb66c8e25ab4e150262533542d33341aab5a67096f551cc