Malicious PDF — malware analysis report

Static analysis result for SHA-256 19f0f8e9ca149af4…

MALICIOUS

PDF

76.3 KB Created: 2021-09-03 13:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: dd9146b269c180a346a4607107ed57a1 SHA-1: 71e0161f5781ce57c14a01838c0bef940b6e6625 SHA-256: 19f0f8e9ca149af456328441b8ddfc5487b7ab2e09f4f6309c3d883f439270c4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous URLs, many of which point to compromised WordPress sites, suggesting a phishing or malware distribution scheme. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics strongly indicate malicious intent, specifically identified as a phishing trojan. The presence of external URIs and link farms, combined with the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic, points to an attempt to disguise malicious content as legitimate downloads, likely to trick users into providing sensitive information or downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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 https://philabc.ru/uplcv?utm_term=axis+bank+credit+card+cancellation+form+pdf PDF link annotation
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/2f94a9c87ea5f3001f9d564f95276406/finiguvusana.pdfIn PDF document text
    • http://amazingindiaphotos.com/amazingindiaphotos//upload/fckimage/file/41333256195.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7957aa6224---xurokitifafisovip.pdfIn PDF document text
    • http://email-database.info/userfiles/file/jivofudop.pdfIn PDF document text
    • https://prosperitas.be/data/assets/file/68243905779.pdfIn PDF document text
    • https://ymvii.com/admin/upload/files/xofuxekopiligek.pdfIn PDF document text
    • http://agriturismocorteerbatici.it/userfiles/files/53860382804.pdfIn PDF document text
    • http://gavinlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rebixiwibobifalizokema.pdfIn PDF document text
    • http://oticonshop.net/ckfinder/userfiles/files/93405431624.pdfIn PDF document text
    • https://flardochform.se/userfiles/file/jufobonizudogakefugetefa.pdfIn PDF document text
    • https://maspacientes.es/wp-content/plugins/super-forms/uploads/php/files/a8tqdjomp4vkh3rjp4k29oeikm/32462843169.pdfIn PDF document text
    • https://ltssinternational.com/res/wysiwyg/file/jevubazadobexadufirokikof.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/k1n4o2b16r9scob5kk3ahqq280/54063159965.pdfIn PDF document text
    • http://vlaamspatientenplatform.be/_plugin/ckfinder/userfiles/files/33007550213.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/8hdl491nmf1mslaqq98v1so6qg/vijok.pdfIn PDF document text
    • http://commsoft.nu/demo/ktb/wsmbilder/files/nitovabe.pdfIn PDF document text
    • https://ncvpte.in/userfiles/file/lopolebarapegowi.pdfIn PDF document text
    • http://stimatacasa.eu/userfiles/files/fimedudoxabuxo.pdfIn PDF document text
    • https://sport-jicin.cz/dokumenty/43730702135.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/luvovanenufiwolopobu.pdfIn PDF document text
    • http://fruhmann-elektrotechnik.at/31611645899.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/lusazegixisafowusemata.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4df99583e4---77405660479.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_off0000c3d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3D6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dbed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBED 11096 bytes
SHA-256: 322d90cfd69dbc4545f745bd46dc5527a34dcccf41b5d5776c4c8a784e471744
font_02_sfnt_off0000f5a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A0 17524 bytes
SHA-256: 2f89b1d83ab80cf86f26d8857209a3e409d910530c22ad52b496af703a1cfede

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