Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f40d0ea834b37d…

MALICIOUS

PDF

77.9 KB Created: 2022-03-30 01:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: 894569ab43e3f8f35c16f1c8df01d452 SHA-1: 48f92580a918f018c40dc472d21bf414897c75a1 SHA-256: a4f40d0ea834b37debe7fb0a29b7030ed746da5388ede2dcd07b07543c2fd987
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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.
  • 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://lazav.co.za/YmrXLWy8?keyword=manual%20de%20organizaci%C3%B3n%20y%20procedimientos%20del%20procet PDF link annotation
    • http://yourbuilding.ru/userfiles/files/gilajapulowo.pdfIn PDF document text
    • https://fenatinuzari.weebly.com/uploads/1/3/5/3/135314561/158913.pdfIn PDF document text
    • http://bukharajohnscreek.com/sites/default/files/file/dixezuvugabogube.pdfIn PDF document text
    • https://wajupera.weebly.com/uploads/1/3/4/7/134763514/gipid_dafuwuzipidufe_nabuzud_sofelasizove.pdfIn PDF document text
    • http://heatexchangersolution.com/upload_fck/file/2022-3-26/20220326030330286919.pdfIn PDF document text
    • https://nufusuninad.weebly.com/uploads/1/3/4/6/134609023/lolozati.pdfIn PDF document text
    • https://nsck-cykelmotion.dk/userfiles/file/39236982156.pdfIn PDF document text
    • https://zewiloda.weebly.com/uploads/1/3/4/6/134655603/47b0ca246f.pdfIn PDF document text
    • https://zuzunavodezap.weebly.com/uploads/1/3/0/7/130776081/1774817.pdfIn PDF document text
    • https://www.coltishallclinic.co.uk/dashboard/ckeditor/kcfinder/upload/files/29261323142.pdfIn PDF document text
    • http://jrscjhadol.org/ckeditor/kcfinder/upload/files/timunudumef.pdfIn PDF document text
    • https://wigufigavotafo.weebly.com/uploads/1/3/1/4/131452860/banubigumubemik.pdfIn PDF document text
    • https://vimadefivikimaw.weebly.com/uploads/1/3/4/2/134265378/zatixeposutitivemi.pdfIn PDF document text
    • https://roxracing.eu/userfiles/file/79419733443.pdfIn PDF document text
    • https://wavinibavuma.weebly.com/uploads/1/3/1/3/131398010/viluzuj.pdfIn PDF document text
    • https://fogasofimoxor.weebly.com/uploads/1/3/1/0/131071298/5003319.pdfIn PDF document text
    • https://xelekukoxenafo.weebly.com/uploads/1/3/7/5/137513843/6998175.pdfIn PDF document text
    • https://komodovo.ru/upload_picture/65823797456.pdfIn PDF document text
    • http://yanarfabrics.com/firma/files/jafutodefomipekuxetapit.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/ebdc60e61a1472f7ffa05fe3bc6312c2/miseperaxodomajosu.pdfIn PDF document text
    • https://sipobazi.weebly.com/uploads/1/3/4/4/134494275/nitogirapor-zevem-logowuwo-budomozavuvob.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/6b2f03d98514dc14cfdfe532c6c58a05/gereki.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 extracted file (font_00_sfnt_off0000c792.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c792.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC792 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0000de36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE36 11260 bytes
SHA-256: 35c80f9121ca7ef58d9961d3b1d473e3b002678b10f0fb1dc1314add31098887
font_02_sfnt_off0000f82b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82B 18204 bytes
SHA-256: 7e277772e9b0240526300fada0731c975b7b2e15c28491c828a5d9ebc2214f18