Malicious PDF — malware analysis report

Static analysis result for SHA-256 44537c64b409aedd…

MALICIOUS

PDF

356.2 KB Created: 2022-03-25 20:24:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 1ed52f3c3f20ffa58a3cd2bedd145e14 SHA-1: 7bc57ee6b255b44bfe4e5d49421d356eb6a951b3 SHA-256: 44537c64b409aedd2f1af7dd6315472cef0ef749771220bafa4535e5f15e7b94
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing embedded JavaScript, which is often used to exploit vulnerabilities or redirect users to malicious sites. The PDF also contains multiple links to external websites, some of which are hosted on compromised WordPress sites, suggesting a phishing or malware distribution campaign. The ClamAV detection further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3915

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://mifuj.co.za/XSRYdR1H?utm_term=guess+the+emoji+movie+level+2 PDF link annotation
    • https://juicy-group.com/editor_upload_image/file/39027238700.pdfIn PDF document text
    • http://applyforloansnow.ca/site-uploads/mixogitut.pdfIn PDF document text
    • http://myflora888.com/ck_files/files/59280941490.pdfIn PDF document text
    • http://www.alm-machines.be/kcfinder/upload/files/81053634160.pdfIn PDF document text
    • http://noahsmarinesurveyors.ca/userfiles/file/99783543059.pdfIn PDF document text
    • http://gusanhightec.com/userData/board/file/rawedutimuwip.pdfIn PDF document text
    • http://www.superprzygoda.pl/galeria/files/98543556099.pdfIn PDF document text
    • http://korea-seals.com/ckfinder/userfiles/files/9645518932.pdfIn PDF document text
    • http://sva-jeanroze.com/xmedia/file/35865371878.pdfIn PDF document text
    • https://alinassociates.com/assets/kcfinder/upload/files/18122774500.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/2sju6i8s4i0p9nao0g3l1a72h1/jobufavirujazakamijafug.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/16209d6455ed76---20700587161.pdfIn PDF document text
    • https://moderator.lt/components/com_mijoshop/opencart/image/data/files/44773706590.pdfIn PDF document text
    • http://www.siposferenc.hu/html/sulikojizanugofogilor.pdfIn PDF document text
    • http://wish-pharma.com/upload/files/nimulepoxobokiruzinutaw.pdfIn PDF document text
    • http://magiepourenfants.com/images/mediamanager/file/95112040373.pdfIn PDF document text
    • http://universityjournals.org/app/webroot/js/kcfinder/upload/files/vejepibekalebufefubigof.pdfIn PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1622436889d330---rewor.pdfIn PDF document text
    • https://www.elshandmadedesign.nl/ckfinder/userfiles/files/32135195024.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/u0bb3dkea9lfk1u6m7jvqqdaqp/zawaw.pdfIn PDF document text
    • http://ludothequelancy.ch/kcfinder/upload/files/40320697368.pdfIn PDF document text
    • http://aylabawadi.ae/userfiles/file/fezotovuzi.pdfIn PDF document text
    • http://universityjournals.org/app/webroot/js/kcfinder/upload/files/93178227562.pdfIn PDF document text
    • https://mojekolo.online/foto/image/files/dopituva.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/10ae5396e1caed6f8d562c4e06755a06/94048899874.pdfIn PDF document text
    • http://d-innovation.com/upload/files/23481908987.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623c0cafe210f---72181963974.pdfIn PDF document text
    • https://portecitadelle.portecitadelle.ca/ckfinder/userfiles/files/43219742004.pdfIn PDF document text
    • https://santa.sg/images/users/00000000/files/kuvurimore.pdfIn PDF document text
    • http://agencies.opertur.com/uploaded/kcfinder/files/tujuzoni.pdfIn PDF document text
    • http://zahradnisluzby.eu/foto/image/files/38025953436.pdfIn PDF document text
    • https://998.geektic.com/geektic/files/84471333671.pdfIn PDF document text
    • http://siciny.eu/userfiles/file/dibamoxolaferunotoxewagi.pdfIn PDF document text
    • https://cvr.repairbase.net/FCKeditor/editor/filemanager/connectors/php/images/file/45500173064.pdfIn PDF document text
    • http://closehorses.com/userfiles/file/dugelutusamejulojino.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16227acb01f6f6---rutezelowitepagu.pdfIn PDF document text
    • http://jan-fotografie.nl/upload/files/vokapudagajamamatotabanen.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50F4B 10460 bytes
SHA-256: 83ddc6f46f24c1c3d8ea6a1c7a80486e64853d96ed9ec8e13db612c47446baaa
font_01_sfnt_off00052718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52718 17188 bytes
SHA-256: 5fddca29593484441f498a422df644f2eea82bf4979119679dd5d7cdb52608c9
font_02_sfnt_off00055339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55339 16220 bytes
SHA-256: 207eb3b51995adbdef2a766e0364e2c2ee182a7f0f0647c12a4a3807efc046f6
font_03_sfnt_off0005691f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5691F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9