Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e9faa07100a8eb…

MALICIOUS

PDF

81.2 KB Created: 2021-09-21 06:29:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: f752c3045612d6902ebdd94a3dc72e29 SHA-1: 8364baa19dceeb223790940f09231069ecf5838a SHA-256: b1e9faa07100a8ebd6ba6684b69adb1a844d9976bab0ebd5da9fa74629fe1cac
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to suspicious domains and structured to appear as file downloads. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a pattern of hosting many distinct PDFs across various domains, suggesting a coordinated effort to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 5

  • 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 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://ipsaix.com/ckeditor/ckfinder/userfiles/files/mekekep.pdf In PDF document text
    • http://lamorenj.com/userfiles/files/36157099934.pdfIn PDF document text
    • http://oldmotorsclub.com/files/file/59951710753.pdfIn PDF document text
    • http://lasantitosrestaurant.com/userfiles/file/bokevijazet.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/0d00b5252d2067dc59b3a8fafb156fc6/paxegepedikotezaguxoxaf.pdfIn PDF document text
    • https://www.bramfordgc.co.uk/ckfinder/userfiles/files/nizurawezawajupimejibe.pdfIn PDF document text
    • http://ahzycw.com/upload_fck/file/2021-9-7/20210907022323439620.pdfIn PDF document text
    • https://chataigne-cevennes.fr/imgs/files/27051907000.pdfIn PDF document text
    • https://mediaskills.rs/files/zataropemu.pdfIn PDF document text
    • http://artecgroupservices.com/imagenes/file/momigapibuzawa.pdfIn PDF document text
    • https://tiemhoahaibara.com/data/dulieu/files/solifamab.pdfIn PDF document text
    • https://penal-garazh.ru/files/revopufa.pdfIn PDF document text
    • http://abpjse.news-read.com/upload/files/potupolidixep.pdfIn PDF document text
    • https://fwstc.in/userfiles/file/23511966989.pdfIn PDF document text
    • http://jcon-aps.dk/userfiles/file/lapidirodumigi.pdfIn PDF document text
    • https://ofly.om-digitalsolutions.cn/upload/files/53845673577.pdfIn PDF document text
    • http://nasfthr.com/userfiles/file/mudobixalowajoradu.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/161493d4e5f522---pujafesekofajerobupibapiw.pdfIn PDF document text
    • https://bya-ingenieria.com/ckfinder/userfiles/files/90365861846.pdfIn PDF document text
    • http://vendsol.com/userfiles/file/46993879712.pdfIn PDF document text
    • https://sunnyvale.com/wysiwygfiles/file/fudiwotomapuwerexekuri.pdfIn PDF document text
    • http://toitureetfacade.fr/data/Files/54153820052.pdfIn PDF document text
    • http://quaint-house.com/images/blog/file/vuronusawolowi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=fortgag+com+vbucksPDF 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_off0000db86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB86 17024 bytes
SHA-256: 2eeb9f9e61c93ce060623ef9702287f98a6c473fd29d2134a1354604678d5cb6
font_01_sfnt_off000107a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FBE 10572 bytes
SHA-256: 7e8dc00eac4ee277cce66f9e5e9ec11ff38aa34f31c4fbd8f6c1213d540f5cda

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