Malicious PDF — malware analysis report

Static analysis result for SHA-256 f963b1e507c31e46…

MALICIOUS

PDF

80.5 KB Created: 2022-03-31 20:53:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: c238e3267e1a06386ea59a047db39368 SHA-1: 0b82a21e4ddafd181f781d444ba95cf4dc5151c5 SHA-256: f963b1e507c31e463592ad3929c83e9df59dfab5e89156e53d2577de7388651b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external links, many pointing to disposable hosting services. This suggests the document is designed to redirect users to potentially malicious or SEO-abused websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://colod.co.za/YmrXLWy8?keyword=how%20to%20make%20a%20sweatshirt%20without%20a%20pattern PDF link annotation
    • https://rojogude.weebly.com/uploads/1/3/4/3/134396813/1651213.pdfIn PDF document text
    • https://nedagipi.weebly.com/uploads/1/3/4/7/134724638/07b64ad88f637c.pdfIn PDF document text
    • https://www.ttmagazin.com/assets/admin/js/plugins/kcfinder/upload/files/wisegedujadabaf.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/161fdad64cd18b---69929434144.pdfIn PDF document text
    • https://ladulokepalixu.weebly.com/uploads/1/3/4/8/134878898/maputitutosun_tidoboje_lorarodevazo_ginawupozawa.pdfIn PDF document text
    • https://topas-septiki.com/media-temp/img/uploads/files/folizusubezevefetotip.pdfIn PDF document text
    • http://zlobek.dinobajka.pl/Upload/file/sedulerekosawomobopan.pdfIn PDF document text
    • https://bovemadewu.weebly.com/uploads/1/3/4/6/134651231/paravorugilira-wadukoja-xugoxera.pdfIn PDF document text
    • https://gunesakozi.weebly.com/uploads/1/3/0/9/130968934/dc22c729af.pdfIn PDF document text
    • https://lemusovigezamo.weebly.com/uploads/1/3/1/3/131381045/671aedacea566.pdfIn PDF document text
    • https://jefexalenu.weebly.com/uploads/1/3/4/8/134865696/892117.pdfIn PDF document text
    • http://dentherapia.hu/files/file/ravowudomatusirifinaronim.pdfIn PDF document text
    • https://pobanofesu.weebly.com/uploads/1/3/1/3/131398475/1119340.pdfIn PDF document text
    • https://ruwizugaxuluba.weebly.com/uploads/1/3/4/7/134759804/bojanowuzupal.pdfIn PDF document text
    • https://balatonpremiumvillas.hu/webroot/upload/files/17257005155.pdfIn PDF document text
    • https://buxodofuluni.weebly.com/uploads/1/3/4/8/134875319/3968144.pdfIn PDF document text
    • https://zuligenewem.weebly.com/uploads/1/3/4/7/134749141/segutotevupawip.pdfIn PDF document text
    • https://xadutodibuj.weebly.com/uploads/1/3/1/1/131164520/5ff61b3be3486.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d70c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD70C 17164 bytes
SHA-256: 222decb90abf095f9361915943ba2dfd936576ec1c3b3fdda179692b7b1c288a
font_01_sfnt_off00010391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10391 10740 bytes
SHA-256: 82de82503d7e41891f0578301efe205baa91b8910dcf990d483db021c09c8fed
font_02_sfnt_off00011c1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C1C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1