Malicious PDF — malware analysis report

Static analysis result for SHA-256 0384f74d6b25c187…

MALICIOUS

PDF

99.6 KB Created: 2021-06-29 17:08:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 57ad4cbf324e68d0ebe3b0c8a389e541 SHA-1: d71a6a4dbdaa20f390d52ec10204db74ea86a301 SHA-256: 0384f74d6b25c187b2df81dc19abbeb9fc353fbc8e03f1ab27178487039436a0
156 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous external URLs, many pointing to compromised CMS uploads or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, and the document body was unreadable, but the URL analysis and heuristic firings are sufficient to assess the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://renault-service.com/userfiles/11070555795.pdf In PDF document text
    • http://bobiniauto.com/userfiles/file/gemorusotozabojati.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b08b456e5ae---mopofujiju.pdfIn PDF document text
    • https://bienenaktuell.com/sites/bienenaktuell.com/files/file/pexiligubalonekaveru.pdfIn PDF document text
    • http://www.stemcellhairclinic.com/files/files/22580582134.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/vm7ociipia1sah01ihgn0khop7/45904194527.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608c2c1f853e5---93782554317.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160daa1db742e2---fijavi.pdfIn PDF document text
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/77f74634e50114c50b6abeb61105eed8/fatijexorizopakosaxofam.pdfIn PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608172dbbe5b6---40901287411.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607655082383d---vigudenot.pdfIn PDF document text
    • http://lordbeaverbrook1973.com/clients/76835/File/xuvesakefasazexe.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/21p0ipgrbmnkhf78q8p9k586ss/rudopekonururoxezisa.pdfIn PDF document text
    • https://iominneapolis.com/wp-content/plugins/super-forms/uploads/php/files/f2325e38787005a638d727a5ddada93f/fodesapove.pdfIn PDF document text
    • https://fotojursa.cz/userfiles/file/damunutasakalumap.pdfIn PDF document text
    • http://lideparts.com/userfiles/file/1620893854.pdfIn PDF document text
    • http://mp-hd.de/data/aktualnosci_imgs/file/95553327768.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cffb09a671---17598173045.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/e1fa393711bfd6131d4e1604038fcc3b/97688794831.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/nqh65o6koce15ikmiefjb1v285/60428157247.pdfIn PDF document text
    • http://lowndes85.com/clients/d/d3/d39312ffd46aa2fbcc4e4de04d96a17f/File/3147426225.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/f32046a278a1df81077e0fdad4f26012/jabeluwenulufunomuzuwut.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/cefvqerd7e05icrac53r0f8ops/96026913569.pdfIn PDF document text
    • http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202105061038299492.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=4+year+careers+that+pay+wellPDF link annotation
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/fba712fbfb0cceaba1eba4fbb87372aa/nabuzibenesisoxojefupot.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_off00012428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12428 17400 bytes
SHA-256: abd5f3ce21da6357e1ecb5056abdb4e7337e284e60acbdfb509dc5110b1f2704
font_01_sfnt_off00015139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15139 10336 bytes
SHA-256: 420fc7278b2e5d98b2f8c94542ecf76d2a44d70f03a320e6cd8e84f18ab872a5
font_02_sfnt_off000168d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168D1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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