Malicious PDF — malware analysis report

Static analysis result for SHA-256 550ddab10d35286b…

MALICIOUS

PDF

339.9 KB Created: 2022-02-25 21:38:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 4103bc458eb27f1820cc9d2806dd12f2 SHA-1: cbf77e97d27a9a14acc54bd45f1adb6a6b232721 SHA-256: 550ddab10d35286b27ea215c714ef3a3fe4dc339c309693652acd00cf159fa99
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6318

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.
  • 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.
  • 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 http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c46b65441f2---54449746277.pdf In PDF document text
    • https://alhurwallpaper.com/Files/files/40542174045.pdfIn PDF document text
    • https://wonkingchina.com/d/files/32588198420.pdfIn PDF document text
    • https://ubk-sad.de/azubi/userfiles/files/15049682686.pdfIn PDF document text
    • https://pcstaiwan.com/ckfinder/userfiles/files/33367765564.pdfIn PDF document text
    • http://tuyothuyluc.vn/webroot/img/files/42758864198.pdfIn PDF document text
    • https://creativitagh.com/pevron/www/img/file/57893994874.pdfIn PDF document text
    • http://mwcapital.net/ckfinder/userfiles/files/35315626405.pdfIn PDF document text
    • http://collegium-connect.nl/ckupload/files/6314185531.pdfIn PDF document text
    • https://mu3yc792xh-rl1.com/contents/files/juvekisurusoxibozolof.pdfIn PDF document text
    • http://gmkms.net/upfile_editor/2022/files/suxotigasebati.pdfIn PDF document text
    • http://e2ingenieros.com/ckfinder/userfiles/files/25451588384.pdfIn PDF document text
    • https://nieruchomoscikomercyjne.co/files/file/26597241137.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/161bcae57da48d---8669832943.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/0e266144cd9e96cede3cdd3c29748b42/diwama.pdfIn PDF document text
    • http://toanthinh.vn/webroot/img/files/zisulodegatolomaxale.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/a0f5133b9fa64010c7ea7093a11fa65b/30481812819.pdfIn PDF document text
    • https://playindiano1.in/ckfinder/userfiles/files/18227293347.pdfIn PDF document text
    • https://choosetop.e-giant.net/fkupload/files/xobid.pdfIn PDF document text
    • http://densayhongngoai.com/uploads/userfiles/file/kubekevujolajekopinig.pdfIn PDF document text
    • https://newshieldinsurance.com/demo/gsa/final/images/file/mawinazirifuwusonobewuk.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/4fa5897a332d66efedbc482d1801451b/40287667292.pdfIn PDF document text
    • http://amadpich.com/userfiles/file/30745538730.pdfIn PDF document text
    • https://baatco.com/ckfinder/userfiles/files/kuvirasozupon.pdfIn PDF document text
    • https://xn----7sbbg1ddpkdc.xn--j1amh/uploads/files/85444233964.pdfIn PDF document text
    • http://wadsoda.com/UserFiles/File/zafuvabuwafako.pdfIn PDF document text
    • https://xn--q3cceuw0c6ab0d2ii.com/upload_file/files/sopapiwozofaveja.pdfIn PDF document text
    • https://kapokcmassage.com/uploads/files/202201242308312737.pdfIn PDF document text
    • https://tidaksusah.com/contents/files/77883221336.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160fa9ac196c8f---71080729534.pdfIn PDF document text
    • http://studiobonvino.com/userfiles/files/tiwim.pdfIn PDF document text
    • http://firewaterdamagedfw.com/test/fckeditor/uploadfiles/file/70787131024.pdfIn PDF document text
    • http://tajesink.com/Uploadfiles/files/sabawiligexisobaz.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/rezixibaruwo.pdfIn PDF document text
    • https://mifuj.co.za/XSRYdR1H?utm_term=lr+baggs+anthem+sl+installation+manualPDF 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 extracted file (font_00_sfnt_off0004bd1d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004bd1d.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004bd1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BD1D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004d438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D438 22544 bytes
SHA-256: 93da9909be1adeadc76459b5732bd501d65acdcd522da0f33d1fc1f9990a57ef
font_02_sfnt_off00050f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50F5A 16232 bytes
SHA-256: 01cd0e4798e93fb086042d610f43ddeed7bf091af48aa863f5c4a4f61b651684
font_03_sfnt_off00052534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52534 10752 bytes
SHA-256: f7ddefee46aa2dde8cf3108c812f0c872c8358f0d8f09bd5b804bc809307573e