Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e3150adeae4192d…

MALICIOUS

PDF

81.9 KB Created: 2021-09-19 06:17:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 11e0fe5014460180c3ce11d916a90c30 SHA-1: 2dfae2e0b3a32de8472a85db9f887be6e3aa3120 SHA-256: 6e3150adeae4192dc4f905b7a157e8d9e346151220694ea7e8cc5b6ed5a7d6a6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs that point to various websites, many of which appear to be compromised or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware. The presence of multiple external links suggests an attempt to redirect the user to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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=play+store+games+gta+5 PDF link annotation
    • https://oolong-dining-co.com/webroot/editor-uploads/files/gedodomipuveralilafisi.pdfIn PDF document text
    • https://foodsafebox.com/ckfinder/userfiles/files/73053116915.pdfIn PDF document text
    • http://ipublicity.cz/data/file/87232455357.pdfIn PDF document text
    • http://adasbruiloften.nl/userfiles/file/bovelo.pdfIn PDF document text
    • https://www.stock2morrow.com/ckfinder/userfiles/files/fenedanad.pdfIn PDF document text
    • http://4darchitecture.org/img/all/mefanutesefuganatatixak.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613efc00871f7---nifapavabofobivirasofuw.pdfIn PDF document text
    • http://mulroyenvironmental.ie/userfiles/file/kajogarenada.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/26037457031.pdfIn PDF document text
    • https://svltv.in/userfiles/files/kukozetovojuturato.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/08ace139f336d33e0688566e008db14a/gupomevuzelenejawidarapa.pdfIn PDF document text
    • https://traveletrust.com/basefile/traveletrustcom/files/97246431109.pdfIn PDF document text
    • https://alubiasdetolosa.com/files/galeria/files/70869830155.pdfIn PDF document text
    • https://eirai.org/editor/ckfinder/userfiles/files/vetorireres.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16135ca4f7f419---52454631740.pdfIn PDF document text
    • http://www.radio-kum.si/data/files/lemonipizuzegunapile.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/161466b8d3d784---14398645328.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/ikuv4kd56qpappkbhndd5v01fo/4817475923.pdfIn PDF document text
    • https://aviatroglo.fr/IMG/file/wukisaponapetarawopamizu.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/161468daa465fc---1742217153.pdfIn PDF document text
    • http://hoclaixebinhthuan.com/upload/contentFile/file/13583062789.pdfIn PDF document text
    • http://groupementpecheduloir.com/ckfinder/userfiles/files/zumusejitiwiliwadi.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_off0000dbc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC6 10504 bytes
SHA-256: 9cf5e304920aaf348b463949b9a4f80adff7137c2350a5adbc3eb3ead37c532d
font_01_sfnt_off0000f3e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E0 17784 bytes
SHA-256: 5282625d7ecab51ba12f4fd54f23c08562d8fb02dac9e7cd05b97f3f30ae78e1
font_02_sfnt_off0001222c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1222C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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