Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0dbbe688f026dfd…

MALICIOUS

PDF

88.1 KB Created: 2021-08-01 19:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 01f789f9b75fbb898098a3b906518020 SHA-1: 6aeb8a5579799234a2c1cca1578877d95f71e407 SHA-256: d0dbbe688f026dfd0cf8ef2a39faa9530e2b3a43ecfdd428b67f2a0511c27ca1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://inwebjor.ru/uplcv?utm_term=kubota+l3400+repair+manual PDF link annotation
    • https://bojovicsirogojno.com//files/xanigiv.pdfIn PDF document text
    • http://skikk.eu/app/webroot/files/userfiles/files/donudorevipugutumifuxew.pdfIn PDF document text
    • https://carsen.sk/editor_uploads/system/files/fanuxoz.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0077dc9310---58062751175.pdfIn PDF document text
    • http://leoclubmarsala.it/userfiles/files/dasupitixijezubonifawadax.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d9ce8e514e6---76436839925.pdfIn PDF document text
    • http://lagunarent.lt/ckfinder/userfiles/files/zizipuxafododopavapalu.pdfIn PDF document text
    • https://sakkestadbil.no/userfiles/file/kululef.pdfIn PDF document text
    • http://paramountswimwear.com/userfiles/files/valofatokojenagaf.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d9b873ea83f---jusijalapinaserirolidut.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3e6d8d9b9---xekikuzetajovire.pdfIn PDF document text
    • http://albertopizzetti.it/userfiles/files/84886369768.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/7a1ud297cldcootbu3o8470doj/97902298880.pdfIn PDF document text
    • http://cyklo-sport-servis.cz/UserFiles/File/rutuzuzoxum.pdfIn PDF document text
    • https://juegosinflablesarizona.com/files/38558663889.pdfIn PDF document text
    • http://airconbank.com/upload/fckeditor/file/34544386615.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f5effc6886e---56704917574.pdfIn PDF document text
    • http://mamaskitchenorder.com/uploads/files/61064559610.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bffdf9a9e9b---52193353202.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a46611ded5---49190976641.pdfIn PDF document text
    • http://massimomoroni.it/userfiles/files/11953979165.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607031edb08f6---59671382960.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/9ff6387489d6c42ea211d86215adaccd/nagovisowexuwijatuvu.pdfIn PDF document text
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/42201173772c456456d7c4c061269321/debizuxitatugu.pdfIn PDF document text
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/5c74a51c4770f4787cd5d0b431e07835/12653425281.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_off0000f5c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C8 10848 bytes
SHA-256: 7f6e3799d7e3b979af8aba5b34fde2fd39e87c2aa4fcfb94189ba93109cb5f4d
font_01_sfnt_off00010e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E95 16136 bytes
SHA-256: 7d0ef0aca162ac286756d6e0355d3606f5dbca9345639b420fb7e53a4b7b6ec6
font_02_sfnt_off00013829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13829 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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