Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a39199fa8afd48…

MALICIOUS

PDF

245.3 KB Created: 2022-03-26 16:26:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 8209bf5c2856e29cff5c3cb0301124e4 SHA-1: 7feb3499a0f2535a3411c5cc6492c517b4922f50 SHA-256: 18a39199fa8afd4874036bda4bae682840c413487a2aeda3fece5fb7a8f8f549
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8164

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.
  • 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://yoyep.co.za/XSRYdR1H?utm_term=msxml4+dll+missing PDF link annotation
    • https://xn--fct8ml6mwue.tw/uploads/files/47042926006.pdfIn PDF document text
    • http://thibangoto.com/app/webroot/uploads/files/44467797804.pdfIn PDF document text
    • http://tpdw.pl/userfiles/file/94005402582.pdfIn PDF document text
    • http://davostravel.com/upload/files/15400923613.pdfIn PDF document text
    • https://baschin-heizung.de/meineBilderAlbertGrundschule/file/73396471606.pdfIn PDF document text
    • http://meterexpert.eu/userfiles/files/zimaxutalebojojak.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/162074a6988403---zisera.pdfIn PDF document text
    • http://faceconnects.com/ci/userfiles/files/35960055218.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/7dceec99baeb18041f9ac41941f68001/pifodedodixal.pdfIn PDF document text
    • http://xn--c1ajalgzu0a.xn--p1ai/userfiles/file/zulategebiwepofu.pdfIn PDF document text
    • http://sgyscom.com/upload_fck/file/2022-2-1/20220201202603934386.pdfIn PDF document text
    • https://ibrahimkoc.com/images/Media/files/kunaripata.pdfIn PDF document text
    • http://satexvernaz.fr/kcfinder/upload/files/gebenaramef.pdfIn PDF document text
    • http://pscemetery.com/userfiles/file/ralanikajulamosuwapunoju.pdfIn PDF document text
    • https://alseedawigroup.com/userfiles/files/toruwe.pdfIn PDF document text
    • https://angkagenap.com/contents/files/39912562883.pdfIn PDF document text
    • http://yachtandgulet.com/userfiles/file/rejukudekipogivisepa.pdfIn PDF document text
    • http://ergo-logo-bamberg.de/userfiles/file/wajibetekef.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/cdde6bc6433175d41c1c2f02c98e5127/xotekuf.pdfIn PDF document text
    • http://ambvet-trefontane.eu/userfiles/files/21087522982.pdfIn PDF document text
    • https://ou-ravda.com/ckfinder/userfiles/files/dukep.pdfIn PDF document text
    • http://votejoedestefano.com/editorData/file/rozeroxukitozok.pdfIn PDF document text
    • http://ns4.fontur.org/aym_image/files/6111228157.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/84374656344.pdfIn PDF document text
    • http://www.biosafety.biz/ckfinder/userfiles/files/29853284124.pdfIn PDF document text
    • http://tw-tms.com/uploadpic/xw/files/77973132680.pdfIn PDF document text
    • https://www.ozkozel.sk/kcfinder/upload/files/15349327307.pdfIn PDF document text
    • http://rjt1.org/upload/files/16397320608.pdfIn PDF document text
    • http://belovosushi.ru/files/movofetipovom.pdfIn PDF document text
    • https://ekotop.eu/userfiles/file/71315855104.pdfIn PDF document text
    • http://www.ppspr.org.br/ckeditor/kcfinder/upload/files/55873606671.pdfIn PDF document text
    • http://pravkniga.ru/files/userfiles/files/3376887123.pdfIn PDF document text
    • http://lube-stc.com/ckfinder/userfiles/files/37935631714.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16201cd39b70df---wuzoxekaxitet.pdfIn PDF document text
    • http://nesemlak.com/test/images/uploads/files/4426409613.pdfIn PDF document text
    • http://rayer.cn/d/files/zofefepekaduniwed.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_off00036611.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00036611.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00036611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36611 10152 bytes
SHA-256: 3552a165f22d2e7926e632e5bbed3e56d7bc67b2b85221bedab27524f1bac8e1
font_01_sfnt_off00037c6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37C6E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00039389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39389 18988 bytes
SHA-256: 49b17a9b9c5694a5717635a73dd88e1e3e1932cb7d6f04255b52b243c27e1d30