Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddaee83aac4ac89a…

MALICIOUS

PDF

84.5 KB Created: 2021-09-24 09:54:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 8e5e2c91c35acf07be90188b85743c70 SHA-1: 352187d51a173593a933467df9144fe64afb989b SHA-256: ddaee83aac4ac89a54a5278aa79f717fb7da02fcd49f16a0c1d3d500ce4fd2ce
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains embedded JavaScript and a significant number of external URIs, many of which point to compromised WordPress upload storage or disposable hosting. The ClamAV detection 'Pdf.Phishing.Trojan' strongly suggests malicious intent, likely to trick users into downloading malware disguised as game files. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4494

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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
  • 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://7sate.com/filespath/files/20210901051518.pdf In PDF document text
    • http://baove247.org/upload/files/radakew.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614215a3423a9---jafoziferurujelolu.pdfIn PDF document text
    • https://westhygiene.hu/editor_up/mojutoroligegepijapam.pdfIn PDF document text
    • http://bobhendrix-law.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/falosarabodawilajorowut.pdfIn PDF document text
    • http://wadirumshootingstars.com/userfiles/file///67160393704.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1613909e763c13---dosukosup.pdfIn PDF document text
    • http://protetyka-lublin.com/images/wyswig_images/file/tuvaveko.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/baa54e9ac46027193ad2f4d3d90b84cd/wuvawetibuvozinesadifoxo.pdfIn PDF document text
    • http://xn--12cmi2byac9cdhd0hra6d7bxkwbgj1gch.com/user_img/files/xuzimawanojefi.pdfIn PDF document text
    • http://austral-immo.com/userfiles/files/vexabikuzek.pdfIn PDF document text
    • https://ildiko-szepsegszalon.hu/userfiles/file/lekufidupilunekon.pdfIn PDF document text
    • http://firmykominkowe.pl/Obrazki/edytor/file/91689449865.pdfIn PDF document text
    • http://massintech.ru/img/outer/files/luxoxowofifotukal.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1614d69fb11203---ligulezebevototabumanipoz.pdfIn PDF document text
    • http://hyunsin.net/userfiles/file/91489059429.pdfIn PDF document text
    • https://k-barrierfree.com/FileData/ckfinder/files/20210911_2C0D7AEBCCE817EB.pdfIn PDF document text
    • http://abwmechanicsville.com/uploads/files/rujobazovibidal.pdfIn PDF document text
    • https://autohausnschmidt.de/userfiles/file/totulafilosub.pdfIn PDF document text
    • http://strojsteel.cz/webpagebuilder/ckfinder/userfiles/files/ruwituvutoxab.pdfIn PDF document text
    • https://hagabb.ro/ckfinder/userfiles/files/79817279168.pdfIn PDF document text
    • http://bekkercoon.ru/ckfinder/userfiles/files/gosasonagidamum.pdfIn PDF document text
    • http://cmuniontravel.com/userfiles/file/xigudi.pdfIn PDF document text
    • http://all-vehicle.net/js/upload/files/gugojajifazuji.pdfIn PDF document text
    • http://bradhelferlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jowenifokabexexisitajisa.pdfIn PDF document text
    • https://www.tahitotfalu.hu/ckfinder/userfiles/files/96754717688.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=dream+league+2019+download+obbPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB1 21664 bytes
SHA-256: b0995f004994efde4efdc7a396a37a60b6c24e34ffa79ef40fa6e2a88e9f809c

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