Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e7cc4ebc946ce33…

MALICIOUS

PDF

82.9 KB Created: 2021-09-01 00:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: b34919e9c84d7e639ddf631f61101fe6 SHA-1: 2a980bcb29f7835a03c4249bc5faa3e7b1e07bed SHA-256: 2e7cc4ebc946ce33485ed070116e7684a81442a60c9688a5ef4eaba97dc3c75b
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various domains, many of which are identified as compromised CMS uploads or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or SEO poisoning to redirect users to malicious content. No scripts were extracted, limiting the analysis of direct execution vectors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • 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.
  • 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://limobebe.com/userfiles/files/sumimokaxemuw.pdf In PDF document text
    • http://cpils.com/userfiles/file/91143570746.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/120617164973.pdfIn PDF document text
    • http://www.octopus-quatuorvocal.com/ckfinder/userfiles/files/zejadefoxemevud.pdfIn PDF document text
    • http://creative-format.com/upload/editor/files/18513064659.pdfIn PDF document text
    • https://euroroma-bg.org/files/file/nuruzivaxe.pdfIn PDF document text
    • https://dietacud.eu/upload/file/texesemomikimotapevazevuz.pdfIn PDF document text
    • https://debcopharma.com/userfiles/file/93488595662.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607bda9722c9d---81691631468.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b8ba10d351a---87896419204.pdfIn PDF document text
    • http://vieclamquantri.net/upload/files/makimugupoleles.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1610b456abd9f8---28122385070.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/dd5d8d8c440a2593bfa17f2e3e93243a/futatirovelot.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607617d6557eb---tisizinamasuvinetiter.pdfIn PDF document text
    • http://splogservice.ru/content/file/90106812194.pdfIn PDF document text
    • https://universitecentrale.net/uploads/FCK_files/file/70005122521.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/16103df5831518---3603945659.pdfIn PDF document text
    • http://rsst77.ru/upload/files/47099914085.pdfIn PDF document text
    • https://mannerfeltdesignteam.se/ckfinder/userfiles/files/nedogofezova.pdfIn PDF document text
    • http://starlightskiothon.ca/clients/4/44/44db284a3a4a6a3f34f8f2fa71918f98/File/naretevatadozuxe.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161258c870267b---55891888252.pdfIn PDF document text
    • http://biosystech.com/pdsFck/file/11108394685.pdfIn PDF document text
    • http://podiummoda.ru/userfiles/file/86152509432.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=class+6+gk+chapter+1+solutionPDF 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_off0000dbac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f3be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BE 18956 bytes
SHA-256: bcfb46b36a8703cdbcc32a95dc6f7ba63a07a1a9d5b334fe5a2a8d0c994edf87
font_02_sfnt_off00012486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12486 11096 bytes
SHA-256: 2fa78db2d9fdf501bfb5cf910fa8be4bb7221a59738850427e09f8ff6bacd39d

Open this report in the interactive analyzer, or submit your own file for analysis.