Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb839486dd9609e9…

MALICIOUS

PDF

542.0 KB Created: 2022-03-23 00:32:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: 6c4eb3474147962706b6ccb267fd5596 SHA-1: d2535f01550965de33a90be7fdaee04149f5a2fc SHA-256: cb839486dd9609e9d6ec71ec0a342794d9c84609dccb9a314216b935fcd65df2
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5031

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 http://ecoaga.com/documentos/file/vivelezodovox.pdf In PDF document text
    • http://ayurvedabodycure.com/kcfinder/upload/files/27933275289.pdfIn PDF document text
    • http://myesen.life/userfiles/file/68331520446.pdfIn PDF document text
    • http://levant-tekstil.com/other_files/File/nogezadewum.pdfIn PDF document text
    • http://www.jatekkalmesevel.hu/admin/ckeditor/kcfinder/upload/files/53653647027.pdfIn PDF document text
    • http://africamusicindex.com/images/files/gowixanekawugalowim.pdfIn PDF document text
    • https://www.zolmedis.lt/ckfinder/userfiles/files/10204609379.pdfIn PDF document text
    • http://greffe-cheveux-tunisie.fr/ckeditor/kcfinder/upload/files/japedupebugikinomavufigud.pdfIn PDF document text
    • http://primewritings.grand-essays.com/media/uploads/files/44526596572.pdfIn PDF document text
    • http://nuk-amro.de/userfiles/file/xifurax.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/162015b0ac717c---lajinenelag.pdfIn PDF document text
    • http://studiomontironi.eu/userfiles/files/2444341504.pdfIn PDF document text
    • http://pustelnik-budownictwo.pl/ckfinder/userfiles/files/50725873194.pdfIn PDF document text
    • https://taiwancy.com/app/webroot/userfiles/files/lufop.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f9f47b5355e---83550147830.pdfIn PDF document text
    • https://roshnaai.com/ckfinder/userfiles/files/gemur.pdfIn PDF document text
    • http://tao-ssct.org/data/upload/file/togutezovegejafevolomofor.pdfIn PDF document text
    • https://safetyhanoi.baohohoanglong.com/userfiles/file/werikaxozefigasumaxuwi.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/162065ff6cba26---zikobemaxitetefes.pdfIn PDF document text
    • http://cmtoolsrental.com/user_img/files/fazimuvibulujizix.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621595ff48312---53312946465.pdfIn PDF document text
    • http://mms.vru.ac.th/kcfinder/upload_new/files/75931317330.pdfIn PDF document text
    • http://intelibud.net/media/files_manager/files/futujikojulafodetawa.pdfIn PDF document text
    • http://hotelclinton.it/userfiles/files/dalefuxurulumefagow.pdfIn PDF document text
    • http://skrutit-probeg.ru/upload_picture/file/4003919180.pdfIn PDF document text
    • http://theartofdesign.nl/ckfinder/userfiles/files/wisalumadomegovaba.pdfIn PDF document text
    • https://mifuj.co.za/XSRYdR1H?utm_term=halliday+volume+2+pdfPDF link annotation
    • http://teplospectr.ru/images/files/jamorezodedukupesupokopal.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_off000807b9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000807b9.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000807b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x807B9 18684 bytes
SHA-256: a59606438cd2bbe7af9b32f03d715fa4438e107c5ab3574521c35cb234298975
font_01_sfnt_off00083861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83861 10580 bytes
SHA-256: e311d772dba7c7312212b4039448914d071292329235ee87436f2b8844af2166
font_02_sfnt_off00085088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85088 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9