Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d042c5789dcf65…

MALICIOUS

PDF

103.8 KB Created: 2021-10-21 18:04:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 2f0907a68deabed83062f0f79178ef7a SHA-1: 4d44481b3e7a00e2c0a47977e8bfc08464718b95 SHA-256: c5d042c5789dcf65b4ac9987eaadd3c0d0c66d9689f2b892560348e1b364b0f3
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9877

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://philabc.ru/uplcv?utm_term=types+of+form+in+music PDF link annotation
    • http://michelesherrinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/purepozejirotixunodu.pdfIn PDF document text
    • http://axwelindia.com/uploads/nopof.pdfIn PDF document text
    • http://kisito.com/userfiles/file/gawurepegezefu.pdfIn PDF document text
    • https://isitekmuhendislik.com/userfiles/file/8818747244.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/fm0hqav6h7vgl8oa67pmpi0s2k/xirepemadaxados.pdfIn PDF document text
    • http://eschool365.in/js/admin/uploadfiles/file/lezimiramupijipukeperoziz.pdfIn PDF document text
    • http://plenerowe.kbo.pl/ckfinder/userfiles/files/86076773256.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16169817a02740---92111336442.pdfIn PDF document text
    • https://cengilli.com/icerik_images/file/vigaradij.pdfIn PDF document text
    • http://goodwill.pl/userfiles/file/dozavivowegixifejotaluro.pdfIn PDF document text
    • https://kudamatsu.org/userfiles/file/80885416942.pdfIn PDF document text
    • http://tunesistudio.eu/userfiles/files/99073771763.pdfIn PDF document text
    • http://fluitec.fr/ressource/site-image/files/kutamugawupixuvenifijabe.pdfIn PDF document text
    • http://lexxyin.net/files/fckeditor/file/savixosemuvonika.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16165cbda33de1---megolupekuzadozasukag.pdfIn PDF document text
    • https://eobliecky.sk/userfiles/file/navagipegeziz.pdfIn PDF document text
    • http://wxmx.cn/upload/ckimg/files/202109131534134276.pdfIn PDF document text
    • http://akademia-jedenastka.pl/zdjecia/fck/file/vitusobuxeno.pdfIn PDF document text
    • http://lex.tj/img/file/gawol.pdfIn PDF document text
    • https://mk-sito.it/uploads/file/buburarugewaxapila.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/46223177444.pdfIn PDF document text
    • http://topbondtape.com/uploadss/file/tasosizolo.pdfIn PDF document text
    • https://acmfashion.vn/uploads/files/19075661403.pdfIn PDF document text
    • http://bassbasement.org/userfiles/file/48162402452.pdfIn PDF document text
    • http://jiehuist.com/userfiles/files/76995476119.pdfIn PDF document text
    • https://www.gurkhasfinance.com.np/ckfinder/userfiles/files/galewa.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_off00012e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E21 10512 bytes
SHA-256: adfa6a07eca5f0425c59d38446fc97674c68877f0e6818b44f97883ec9205c99
font_01_sfnt_off00014613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14613 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E25 19652 bytes
SHA-256: 1e2870e271da6141f13b3d32f9e0e5cd2bece4aa2c8b95bf1317e7c8724599bd