Malicious PDF — malware analysis report

Static analysis result for SHA-256 94135d81a1f54e9b…

MALICIOUS

PDF

74.1 KB Created: 2022-05-10 05:00:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 779f8439cc3fa9e7427ef9375cff0da7 SHA-1: 6df00985646042dee9d38c40b81d795dc5612608 SHA-256: 94135d81a1f54e9b19e2c3e56ace4e78bf1d5b1cd6d6d567dd90c52143ec7a9b
210 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript and a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to exploit users into downloading further malware. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 9

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://yubit.co.za/YmrXLWy8?keyword=barbarians%20at%20the%20gate%20book%20pdf%20printable%202017%20calendar%20pdf PDF link annotation
    • https://sivubatololux.weebly.com/uploads/1/3/4/8/134850937/dagiziwamazi.pdfIn PDF document text
    • https://semaputeson.weebly.com/uploads/1/4/1/4/141444129/7787478.pdfIn PDF document text
    • https://irantruck.ir/data/file/57779627936.pdfIn PDF document text
    • https://watinamubil.weebly.com/uploads/1/3/0/8/130813586/5cd49dc9f23.pdfIn PDF document text
    • http://www.korsun.ic.ck.ua/js/kcfinder/upload/files/dudufirive.pdfIn PDF document text
    • http://partenairepologne.com/upload/files/63353828164.pdfIn PDF document text
    • https://dujizozobalosu.weebly.com/uploads/1/3/4/4/134470010/fokomalekek.pdfIn PDF document text
    • https://dubuzosokiboxof.weebly.com/uploads/1/3/1/1/131163723/raxopekupukowen.pdfIn PDF document text
    • https://wofixoxabovu.weebly.com/uploads/1/3/4/5/134524794/muvaduxowalufe-volipegijoliza-fijepejukuv-redokizenowijo.pdfIn PDF document text
    • https://fivalamividow.weebly.com/uploads/1/3/4/8/134857099/pojarunulizuvovef.pdfIn PDF document text
    • https://dovinaturaxamij.weebly.com/uploads/1/3/5/3/135349119/dasojofur.pdfIn PDF document text
    • https://xegizotusubox.weebly.com/uploads/1/3/2/3/132303054/5f7b63.pdfIn PDF document text
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1624297f33caa3---boruzofidiwamisus.pdfIn PDF document text
    • https://sunerewej.weebly.com/uploads/1/3/4/7/134724547/ef05b38374.pdfIn PDF document text
    • https://lubumona.weebly.com/uploads/1/3/4/6/134648672/dididoxopipuju-gotejipebirekil-popode.pdfIn PDF document text
    • http://dtyxbpzx.com/filespath/files/20220329215032.pdfIn PDF document text
    • https://gagezomelebagam.weebly.com/uploads/1/3/1/6/131606069/sotatunenivegap.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/3333e1290996abeddb72a2fe2327bb40/kusalida.pdfIn PDF document text
    • https://vexivager.weebly.com/uploads/1/3/4/6/134634122/fasologarizusasu.pdfIn PDF document text
    • https://lakizixobatit.weebly.com/uploads/1/3/4/3/134325667/d228588eea.pdfIn PDF document text
    • https://lezojefob.weebly.com/uploads/1/3/5/3/135319065/8b64b38fb8c.pdfIn PDF document text
    • http://capitaldanceacademy.com/userfiles/files/gepuvofalalufivadukopuse.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_off0000bbd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBD8 11528 bytes
SHA-256: 495a3df06427e4b44212e10087a53a462e6ee5f6b3bdb1304c26952c2f5578ab
font_01_sfnt_off0000d6d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D2 16672 bytes
SHA-256: 54fc45c5dfb2e839913dd9f93091ee93aaa4ea1c81ae350f683645d051c9aaa2
font_02_sfnt_off00010235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10235 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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