Malicious PDF — malware analysis report

Static analysis result for SHA-256 425347acabc6b6d2…

MALICIOUS

PDF

84.1 KB Created: 2021-11-22 23:25:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: b0b0c9910116ef1ce56060dc5078db64 SHA-1: 7ab623b2202bc744c1d844916030be77a6d9e87a SHA-256: 425347acabc6b6d22aa6c46780544d4db53bd99672799e29e9d506f67eebce13
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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 http://thermogroup.ru/uploads/files/gadudasogifuj.pdf In PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1619b2f951ac24---kapofevupufumakatiluj.pdfIn PDF document text
    • http://cuborh.com/natelinhanew/js/ckfinder/userfiles/files/14982043435.pdfIn PDF document text
    • https://www.uflo.edu.ar/ckfinder/archivos/documentos/xupukovekix.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/93197778632.pdfIn PDF document text
    • https://korovin.org/site/img_ufiles/19261922546.pdfIn PDF document text
    • https://liho.cz/UserFiles/File/1948915972.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/tof32c10e92nug49arski1vqs1/99788605076.pdfIn PDF document text
    • http://dachastyle.com/userfiles/file/23127356603.pdfIn PDF document text
    • http://ogcdc.org/uploads/ck_upload/files/dalafebanijotobukudijiwag.pdfIn PDF document text
    • https://pomtco.com/technical/files/file/26806751649.pdfIn PDF document text
    • https://dongcohonda.com/userfiles/file/48067311131.pdfIn PDF document text
    • https://avigailpekelman.com/sites/default/files/file/51635393652.pdfIn PDF document text
    • https://pontus-sd.eu/uploads/file/piwawojaluviwedu.pdfIn PDF document text
    • http://moveworldtogether.com/datas/files/27392998311.pdfIn PDF document text
    • http://sieuthihatgiong.vn/webroot/img/files/figuxojekazebajuwigumadi.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1613261d48ab38---vinejexojuxobonumo.pdfIn PDF document text
    • https://destination.irinadempsey.ru/userfiles/file/86795021890.pdfIn PDF document text
    • http://www.photonics-science.com/ckfinder/userfiles/files/39617590439.pdfIn PDF document text
    • http://ecompletecontact.com/ckfinder/userfiles/files/22893100675.pdfIn PDF document text
    • http://ciaooo.ru/uploades/userfiles/file/wavigaxefijesifipegubil.pdfIn PDF document text
    • http://winecellarkeeper.com/ckfinder/userfiles/files/30025614791.pdfIn PDF document text
    • http://thaifilmind.com/upload/files/rapatazuzaxibuku.pdfIn PDF document text
    • http://eastindiaspray.com/suvra/eastindia_spray/files/20104455534.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/RhDyTiV0TgQ/uplcv?utm_term=critical+race+theory+criminal+justicePDF 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_off0000e144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE144 19112 bytes
SHA-256: 6c69ff4f7763078695b1e531a7f9989af62eec50403d934c6c4e66a52dd05fde
font_01_sfnt_off00011348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11348 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off000129ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129EC 10872 bytes
SHA-256: ba935cbdae9789191f1137deb891d2f8d149d9fe0d6e9367856abce092772cd6