Malicious PDF — malware analysis report

Static analysis result for SHA-256 70f9b3f8bcff03b1…

MALICIOUS

PDF

72.1 KB Created: 2021-09-26 06:26:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 57d24a1f8de426a6001068a40d9da33f SHA-1: 654eb6dce3d4c1e4104e157ca070cab6f6d83dc2 SHA-256: 70f9b3f8bcff03b1e97e8132233a0063259e9182fa6922dbbbb4cd3ddb8072cf
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of URLs like 'https://garglob.ru/uplcv?utm_term=apk+for+gta+vice+city' indicates a lure for potentially unwanted software downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://garglob.ru/uplcv?utm_term=apk+for+gta+vice+city PDF link annotation
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614271d77f643---tijogaj.pdfIn PDF document text
    • http://dautuck.com/uploads/userfiles/file/88612557118.pdfIn PDF document text
    • http://associatedreclaimed.com/userfiles/files/gogibuwusanepijopidekudo.pdfIn PDF document text
    • http://xn--q20b13r9leepaeb.net/upload/file/202109250902020636.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/cd4914429ebf153b0286346c413e878f/64459134390.pdfIn PDF document text
    • http://saigonradio.com/userfiles/file/29983725841.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613084afc2772---wodet.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/78caeec446b0b276a27f6f73c25935a3/lalakokemaba.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132d7f9b714e---lomup.pdfIn PDF document text
    • http://artanuji.ge/admin/ckeditor/ckfinder/userfiles/files/48653333029.pdfIn PDF document text
    • http://epodhajska.eu/UserFiles/File/57327290981.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614707cab9ea4---vetox.pdfIn PDF document text
    • http://www.kowel.com/ckfinder/userfiles/files/1630533410.pdfIn PDF document text
    • http://jmvlpslimited.com/ci/userfiles/files/xopumunefolubimejoli.pdfIn PDF document text
    • https://soechi.id/userfiles/file/17341029170.pdfIn PDF document text
    • https://pulsekb.ru/admin/ckfinder/userfiles/files/gobev.pdfIn PDF document text
    • https://muahohangnhat.com/app/webroot/uploads/files/91551719106.pdfIn PDF document text
    • https://abandassociates.com/ckfinder/userfiles/files/51618910926.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/bd42bed4a470dd3fe6af4512d148e222/soref.pdfIn PDF document text
    • http://eiffelflowersquesnel.com/userfiles/file/zivipojalopobowolepukesan.pdfIn PDF document text
    • http://thetsaban3watnuea.com/UserFiles/file/gegexajomugoti.pdfIn PDF document text
    • https://bdprescription.com/ci/userfiles/files/bugezo.pdfIn PDF document text
    • https://soudurelauziere.com/upload/editor/file/41440255156.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b423cf34bd---84556142142.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131240ee740c---44648460536.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_off0000b3d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D3 10592 bytes
SHA-256: 7519490a2e8af292f5a740f14ff553407f792ccb789fe3e6b804efb5f59e9c0d
font_01_sfnt_off0000cc44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC44 17984 bytes
SHA-256: 3c7c8b0634dce4ad3a26021ebb7db17125c94076cdbd8dd569841393e0fad076
font_02_sfnt_off0000fafb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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