Malicious PDF — malware analysis report

Static analysis result for SHA-256 941b4a7a69ebcdc6…

MALICIOUS

PDF

342.2 KB Created: 2021-12-29 17:24:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 5eca55b856703c84651340415196655e SHA-1: d9f60a2d762ac77012cf37d1c4f380a9b537af9a SHA-256: 941b4a7a69ebcdc6c6b4ce637120f7e698d9edbb549d010db808672357b1c88d
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high-confidence heuristic indicates it's a phishing lure using an image to redirect to an SEO redirector. The redirector URL is associated with a 'free-download phishing' lure. While the specific family is not identifiable, the techniques suggest a phishing or malware distribution attempt via a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6933

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://ladangmimpi.com/contents/files/37540241900.pdf In PDF document text
    • http://aock.kz/app/webroot/js/kcfinder/upload/files/gumakulo.pdfIn PDF document text
    • https://birgatour.mn/js/ckfinder/userfiles/files/63330640240.pdfIn PDF document text
    • http://strandkrabbe-hohenfelde.de/sites/default/files/files/neneli.pdfIn PDF document text
    • http://doctour.hu/uploads/ckfinder/userfiles/files/vafafajeperilodavoninegor.pdfIn PDF document text
    • https://ncsccalgary.com/userfiles/files/48804050434.pdfIn PDF document text
    • https://online-wums.com/files/files/natupipuvuludorevegimidu.pdfIn PDF document text
    • https://kvzriu.org/images/file/kirinasevopatave.pdfIn PDF document text
    • http://bangladeshceramicsociety.com/uploads/editor/files/71359554326.pdfIn PDF document text
    • http://kbinteriery.cz/userfiles/file/23328668140.pdfIn PDF document text
    • http://pierrevillers.fr/mairie_files/file/ruzapupafi.pdfIn PDF document text
    • https://kocarbon.vn/luutru/files/96980688049.pdfIn PDF document text
    • https://mogilew.ru/userfiles/file/72539047485.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1618f67029a93f---43800652326.pdfIn PDF document text
    • http://candientushinko.com/images/file/56957640274.pdfIn PDF document text
    • http://bojovesporty.cz/userfiles/file/19768404650.pdfIn PDF document text
    • http://hanaelectric.com/userData/board/file/14211384690.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/161bc7dfea9047---24323540195.pdfIn PDF document text
    • https://led7.ru/file/76694662187.pdfIn PDF document text
    • http://marquisdecor.com/userfiles/file/miwomunalus.pdfIn PDF document text
    • http://yildizteknikelektrik.net/resimler/files/pofavasiwokit.pdfIn PDF document text
    • http://gamulchi.org/userfiles/file/bewabagizojepagojo.pdfIn PDF document text
    • http://buydecor.ru/uploads/files/92108268630.pdfIn PDF document text
    • http://cuathepvangohaiduong.com/images/ckeditor/files/62919125421.pdfIn PDF document text
    • http://montoaneli.com/ckfinder/files/losejepusojotiposo.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/tgwjJlsMqHc/uplcv?utm_term=free++lionel+richie+back+to+frontPDF link annotation
    • 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_off0004efc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EFC2 10476 bytes
SHA-256: 11cccbf3d0d1a336a651d2164786f1e694b72590d6e5016458fdd0801024cded
font_01_sfnt_off00050769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50769 16836 bytes
SHA-256: f801ce00843ed0ed2dfd4c70abee82b0fb6a72603de0314f6f1a4905be1ad5ff
font_02_sfnt_off000532f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x532F0 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336