Malicious PDF — malware analysis report

Static analysis result for SHA-256 941037f9d734382e…

MALICIOUS

PDF

320.6 KB Created: 2022-02-04 04:33:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 19776303d8636d5382dfa13b11ab6bb5 SHA-1: 702dd23f2534b07256e35794fd86a43cdce16b37 SHA-256: 941037f9d734382e75488b95f76a9d15283be7fd1eb078cb17eac701ce233ab1
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URLs, including one pointing to a compromised WordPress upload directory. The presence of a PDF_SEO_UTM_REDIRECTOR_LINK heuristic suggests a phishing lure, likely disguised as a free download. The embedded JavaScript is likely used to facilitate the download or redirection to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7140

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://sunuf.co.za/XSRYdR1H?utm_term=delegation+poker+karten+pdf PDF link annotation
    • https://sicurezzaips.it/uploads/file/pawojuragikasozatorajuz.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/82fea683dea8258161458da8e40fb1d6/goweniroxamofefolexaw.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/161cbde12409d6---7694561128.pdfIn PDF document text
    • http://gospelpour100voix.com/fichiers/newsletter/file/86728226883.pdfIn PDF document text
    • http://cesishotel.com/res/wysiwyg/file/7496959135.pdfIn PDF document text
    • https://resortweeks.pro/userfiles/file/balivupazumokuv.pdfIn PDF document text
    • http://mediasingrid.com/js/new/fckeditor/userfiles/file/fofatowonetusawedubume.pdfIn PDF document text
    • http://zl369.net/userfiles/file/gebazivegix.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/86828c772ba26cce108e8d7b48815964/20796092092.pdfIn PDF document text
    • http://herium.net/FileData/ckfinder/files/20210924_6A3025A72A864127.pdfIn PDF document text
    • http://agrostroi-proekt.ru/ckfinder/userfiles/files/72068140163.pdfIn PDF document text
    • http://unibeauty.com.br/ckfinder/userfiles/files/20053025258.pdfIn PDF document text
    • http://kriosispl.com/cote_dor_import/admin/ckfinder/userfiles/files/52100188639.pdfIn PDF document text
    • https://loyallcanada.ca/editor_files/file/gakefavuzulofafa.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/16176d0d9d9583---pudodaroxalajajesuxediper.pdfIn PDF document text
    • http://anke.de/data/anke.de/uploadfiles/file/bajezivisijowazipew.pdfIn PDF document text
    • http://opsir.eu/files/file/22073725769.pdfIn PDF document text
    • https://www.apsar.es/assets_back_office/js/plugins/kcfinder/upload/files/36139391031.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/1613cceeb17bd8---jijaxojagot.pdfIn PDF document text
    • http://brackenpaving.com/files/lezidafixuzamalojarafe.pdfIn PDF document text
    • http://labonscafe.com/userfiles/zazukagazozubusijananelix.pdfIn PDF document text
    • http://mobilesamara.com/img/files/file/77494859274.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16170a97d61e55---xegin.pdfIn PDF document text
    • https://dewalt-naradi.cz/media/upload/editor/file/gudixowevukajodof.pdfIn PDF document text
    • http://activesites.atiks.org/files/pagesuw.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/7556de652885c817dfe1d3c0317a42c5/71496478833.pdfIn PDF document text
    • https://www.nhabe.com.vn/ckfinder/userfiles/files/6282840209.pdfIn PDF document text
    • http://salocchi.it/userfiles/files/90650080942.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_off00048dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48DAB 21124 bytes
SHA-256: 2889d7c93e8d0a4cea13a8b428d7458bc6481fb6287dd2a1388d093a8899e138
font_01_sfnt_off0004c26d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C26D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004d98d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D98D 10600 bytes
SHA-256: ea1988dc977a834beb83e5084827ca7d2f691e7df02a9cf93c6650cbc352f1e3