Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddf2028fb590e82…

MALICIOUS

PDF

447.5 KB Created: 2022-03-10 06:23:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 389607b1675d702ec90a1eeb41a62ccc SHA-1: 1a31d7e894395cf6f9e106ed2a58f9054b8efae2 SHA-256: 3ddf2028fb590e8264b92c5cf6fc321a3d4bcebc36f9f41a8533b494e096fcae
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high-confidence heuristic indicates it is a phishing lure for free downloads. The embedded JavaScript likely facilitates the download and execution of a secondary payload from the provided URLs. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5095

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.
  • 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://tevav.co.za/XSRYdR1H?utm_term=tutorial+of+c+programming+pdf PDF link annotation
    • https://ijacr.net/assets_admin/ckfinder/core/connector/php/uploads/files/45118608567.pdfIn PDF document text
    • http://callbells.com.ua/kcfinder/upload/files/fugukexinisibeleg.pdfIn PDF document text
    • http://cosmosartinteriors.com/kcfinder/upload/files/63405996852.pdfIn PDF document text
    • http://hinoki-machine.com/upload/file/78436869930.pdfIn PDF document text
    • http://alde-pace.org/ckfinder/userfiles/files/xegakavajigo.pdfIn PDF document text
    • http://specialcats.nl/media/files/xotisuluzusonipufuxigek.pdfIn PDF document text
    • http://tribeninepal.com/dbros/public/ckeditor/kcfinder/upload/files/98040784134.pdfIn PDF document text
    • http://mtqindia.com/app/webroot/uploads/files/xakumaritifugugujo.pdfIn PDF document text
    • http://iviltra.lt/images/files/navineretuvexozivuloreju.pdfIn PDF document text
    • http://daearesort.com/FileData/ckfinder/files/20220201_26410976B64522C7.pdfIn PDF document text
    • http://lejuriste.ru/files/file/15166831706.pdfIn PDF document text
    • https://btsis.com/upload/ckfinder/files/20746122543.pdfIn PDF document text
    • http://opt-russtd.ru/data_center/upload_pictures/file/fujugaxokagunumozupe.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1621e7a7aaa702---gosojeja.pdfIn PDF document text
    • https://kossuth-csepel.hu/inc/kcfinder/upload/files/8284992286.pdfIn PDF document text
    • https://thefencedocumentary.ca/adminfiles/file/tigabibufuzezurezifixag.pdfIn PDF document text
    • http://ellipsisnovel.com/file_space/files/rovunarewabel.pdfIn PDF document text
    • http://harmony-stone.info/js/kcfinder/upload/files/josorubekidon.pdfIn PDF document text
    • https://freebcard.com/ckfinder/userfiles/files/29356148132.pdfIn PDF document text
    • http://eventechsite.com/files/files/wifimonuforokudimutegol.pdfIn PDF document text
    • http://xn----1-6cdapb2bdyqawnpcindqfc.xn--p1ai/media/file/nepim.pdfIn PDF document text
    • http://batteryzone.pk/assets/kcfinder/upload/files/45953225909.pdfIn PDF document text
    • http://mojaksiegowa.net/userfiles/file/ritowaligufepapojiza.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/vnfqrqqecakiimlj2p2tkh1imn/zisunedupanimatezep.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_off00068bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68BBB 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0006a2d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2D6 19768 bytes
SHA-256: c99965d5721860011ca741862aff0af516a7f78070d4015cbb1a38041a949108
font_02_sfnt_off0006d69a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D69A 10724 bytes
SHA-256: a3136fb166665dd54291a7bc5ed8ac2e31aeccc73d53a76af350942280c970a6