Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e5d3179478599d4…

MALICIOUS

PDF

90.7 KB Created: 2021-07-30 19:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: f0e81f6c4758f22542246bba20897900 SHA-1: 0c9312bf1fe9cfe4495c195b2e9ddcf7e4123848 SHA-256: 9e5d3179478599d4a00c6e39ad0d704b0e60c941e0d5a4ee10fdbdbf67f587f9
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is often used to exploit vulnerabilities or redirect users to malicious sites. The numerous external URIs, many pointing to compromised WordPress uploads and disposable hosting, suggest a link farm designed to distribute malware or host phishing content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely as a phishing or malware delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • 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
  • 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://amd-export.com/site/upload/file/jodatimaluguk.pdf In PDF document text
    • https://art-gallery.mn/uploads/files/34138815357.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/m6pl7omqa32s5eu24jh4ecqavn/gekovufojijarujamogow.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/34812753411.pdfIn PDF document text
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/2a4f9904342790e0940fb0d15bee7b44/2176388590.pdfIn PDF document text
    • http://alt-1c.ru/userfiles/file/witebazepaxanobowa.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608e635372621---403071743.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16100fee448996---19274220261.pdfIn PDF document text
    • http://hjtech.org/admin/upfile/file/fuxaxeku.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e34cccd219---15634650981.pdfIn PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/nofefitajuxo.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/8dab708953c9193983709ea392b83e7e/sibawesarasugur.pdfIn PDF document text
    • http://golfproradost.cz/webpagebuilder/ckfinder/userfiles/files/gibuxam.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/bikadirekatalijadabekaw.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/wudegufotilerojesufezibov.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160f452237db37---mupigogolominowirotudo.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7d396242e---57142677795.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/38034819043.pdfIn PDF document text
    • https://catbasailing.com/upload/fck/file/vasafavexowiwa.pdfIn PDF document text
    • http://championshipsportsrings.com/clients/23492/File/34932300537.pdfIn PDF document text
    • https://aeap.com.br/ckfinder/userfiles/files/31423235819.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ac371d4cba9---54122513056.pdfIn PDF document text
    • http://maxidmum.com/images/upload/fck/file/78155441346.pdfIn PDF document text
    • http://shiinamotors.com/js/upload/files/7503469688.pdfIn PDF document text
    • https://sunrise-photon.com/upfiles/editor/files/17143577677.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=can+am+defender+xtp+hd10+pricePDF 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_off0000fa64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA64 17924 bytes
SHA-256: 590634fa992854d0d35550e0cc5d41eceae84fa1425c46ea6980d6a4c7ba034b
font_01_sfnt_off000129d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129D6 10860 bytes
SHA-256: b270f70f4f9a2bf625b7047b5d38e5f96519e6089bf7a8562c73077c7585d21a
font_02_sfnt_off000142c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142C2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.