Malicious PDF — malware analysis report

Static analysis result for SHA-256 94138d1510c1e7a2…

MALICIOUS

PDF

387.6 KB Created: 2022-03-04 03:55:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 0d5b823bc25fe160b9427782c91e5294 SHA-1: 5f8da29a441d1b68a54d90d01b0e48ee2ab31a87 SHA-256: 94138d1510c1e7a229189a30c629a6fe036f7b2e4e32756bcc3f6fb14fbd027b
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a PDF document containing embedded JavaScript, which is a common technique for delivering malicious payloads. The PDF also contains numerous links to external websites, including one identified as an SEO redirector likely used for phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the execution of JavaScript to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7954

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.
  • 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.
  • 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://colod.co.za/XSRYdR1H?utm_term=guadalupe+river+fishing+guides PDF link annotation
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/dc5d2153d97c648699182c1ba4ae05ef/rakupulun.pdfIn PDF document text
    • http://mopron.ru/upload/files/sinolexigudokawaxegefugag.pdfIn PDF document text
    • http://tuv-zimer.co.il/assets/userfiles/files/35165269152.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/162064c87f3281---10979593125.pdfIn PDF document text
    • https://tradegateindia.com/userfiles/file/muvupe.pdfIn PDF document text
    • https://dodatnojamstvo.com/userfiles/file/81081154628.pdfIn PDF document text
    • https://chachachat.info/js/ckfinder/userfiles/files/62170316330.pdfIn PDF document text
    • https://southernwashpros.com/nbloom/fckuploads/file/roralabifixopij.pdfIn PDF document text
    • http://piwcnorthhouston.org/admin/ckeditor/kcfinder/upload/files/rureligisaz.pdfIn PDF document text
    • https://fkip.unsam.ac.id/kcfinder/upload/files/94185093680.pdfIn PDF document text
    • https://inkxds.com/userfiles/file/71399745645.pdfIn PDF document text
    • https://sinarlangit1.com/contents/files/jevipewezaderedomubinug.pdfIn PDF document text
    • https://dacinsara.ro/fckfiles/file/juvukebamafosi.pdfIn PDF document text
    • http://kalecikliyiz.biz/panel/kcfinder/upload/files/75598802202.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620a6105ab9c2---12396873808.pdfIn PDF document text
    • https://acv-verdun.fr/kcfinder/upload/files/puzolutezawuxubemag.pdfIn PDF document text
    • http://sncelamel-dz.com/app/webroot/assets/js/kcfinder/upload/files/lobiputufuribewefoduwet.pdfIn PDF document text
    • https://life-homeshop.com/asset/uploads/files/23036446805.pdfIn PDF document text
    • https://ehilteknik.com/uploads/files/vigopivuligopevosubijo.pdfIn PDF document text
    • https://queensflower.nl/clientfiles/netejuboduw.pdfIn PDF document text
    • http://jgbt.us/pds/userfiles/files/9067563000.pdfIn PDF document text
    • http://mercuresamuichaweng.com/admin/file/74514819602.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/abi2g9fqpp2br05770p70eb2h0/80758050917.pdfIn PDF document text
    • https://bruceleevideos.org/images/file/41121465124.pdfIn PDF document text
    • http://improntediteatro.it/userfiles/files/4201218196.pdfIn PDF document text
    • http://moonyart.ru/admin/ckeditor/kcfinder/upload/files/3985660342.pdfIn PDF document text
    • https://www.colegiocapitanarturoprat.cl/third_party/ckeditor/kcfinder/upload/files/27493216278.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_off0005a605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A605 10764 bytes
SHA-256: 83a3b50e3695c1174ac5896dcac13f1faf8d86bd528a83553b3294a9a23fa8d5
font_01_sfnt_off0005be7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE7D 16176 bytes
SHA-256: fd0a071189ed93d3a6273d1eb1c79410e53552ae20d3da3175fb915603895fee
font_02_sfnt_off0005e85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E85D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9