Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb03f0c5d9f41931…

MALICIOUS

PDF

93.9 KB Created: 2021-06-29 18:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 62a51831b1c61c9d60415cf05cb7a105 SHA-1: f45b44e2ba7c00a5117c115d48404bc8b60310b5 SHA-256: bb03f0c5d9f4193112c71930f6e52200942bf520f8384c0d32d9b7e32246bbf6
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous URLs pointing to compromised WordPress sites, suggesting an attempt to distribute further malware or conduct phishing. The document body is heavily obfuscated, preventing analysis of its specific content, but the presence of many links to potentially compromised domains strongly suggests a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9786

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 http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160805b1a2a5db---89062953691.pdf In PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9681a05884---bajopapumatobanopudaj.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609af809e08db---74007034802.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/7quvkkhbera58r1d3tfsuqsfmr/55816646397.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160795169520ef---degopevitamivizumuku.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e41660b3a---86492882740.pdfIn PDF document text
    • http://engroupe.ca/aym_image/files/28458831820.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077b04abc9ea---gafokifetevaravi.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/59390115549.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16073cb3de4ab3---tibojare.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1b8132b6ac---90923781888.pdfIn PDF document text
    • http://x-site.by/upload/editor/files/begelalebuvawugabir.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cdda602806---dubezupijo.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/2271e31778cba4248a64a1d40ec9a6e6/57555600334.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdce8a9d8e---musufo.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/upu12cl4tlm2o9n2e5o8ekqgbu/77082608976.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/0q4jmqhi5gpt8ufvbeam569ea1/21571714717.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d230c4ae211---besimirivimovunuwikimeral.pdfIn PDF document text
    • http://www.cddfct.com/up_files/file/3114741927.pdfIn PDF document text
    • http://cesurmakina.com/userfiles/file/jetoloxed.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c961a0f3988---rumababuribu.pdfIn PDF document text
    • https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/s410dvqv7ogff50mp02qnuumf3/96820815159.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/c060a3b307dc2560ece63cdfc05ef188/19891672377.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1984f6a288---kolebixegubekufakiwafe.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/m433pglfbos928f3h9jthm7a17/tebajedi.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/89b928a48e9f9c8fbaa56011517aecb5/20858907164.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=mikage+3ds+emulatorPDF link annotation
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE8 17964 bytes
SHA-256: 29066c036ebb63fa00216adf69cae49390b6024b41e0c282ba3beb65239c9104
font_02_sfnt_off000139bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139BF 10844 bytes
SHA-256: 1cf185dab61ed29de32b74b63c8e90bb1d8ffb86301806e8e37bef4aa4d82104
font_03_sfnt_off000152a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152A1 16568 bytes
SHA-256: 3838b6b1b0e1825951a450dc2d5dad35b4b27d88428a7fcbfa23a6afc2a0846d