Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6962774868a18e…

MALICIOUS

PDF

99.3 KB Created: 2021-07-08 05:36:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 0b0256043e45e413fe7d30fa5314e98e SHA-1: cea6039153811899ab1410d1f40d5e1f93f0f1ba SHA-256: ce6962774868a18eeee781004632327667f821a12c065d310593a3bd092ef09e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL analysis point to a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160aa09673720b---titozaludasururafibes.pdf In PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a074075053---vamiso.pdfIn PDF document text
    • http://frangarcia.eu/upload/file/72630649539.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/9aad1f2bcfa74fc33cf52f5ebb577244/97766984076.pdfIn PDF document text
    • https://bahceneryaman.net/public/content-images/files/nezoxobo.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/ccfce14bc73235ee6724cb1987eadb99/misejazejowalix.pdfIn PDF document text
    • https://www.explosivo.gr/wp-content/plugins/super-forms/uploads/php/files/486149e02a7412b51dc9ee158d53e33b/bupit.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/318b0575d39de790e5b024f41ade29d3/dezasozogijuvakakebaw.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160ded508c7f0a---losetotazesegunuzano.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d7375c47b56---61302669474.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/n4qcgm9pg5bes05tdejtac6oo3/ludifixadelobadirisikuzo.pdfIn PDF document text
    • https://airbays.com/userfiles/file/biwuxinixuvetotoxomo.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/jf9a21us9rcdp6gsbclbjpoktp/fukatelejubimeme.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/8d350ee43aedf8149b1cf0af2fbf4fdf/werejonefewumanebo.pdfIn PDF document text
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7d523017d9---27279581428.pdfIn PDF document text
    • http://littlepearlspublishing.in/data/eimages/file/48939946785.pdfIn PDF document text
    • http://kme-kme.cz/files/file/47517005764.pdfIn PDF document text
    • http://icltindia.in/userfiles/file/58814457955.pdfIn PDF document text
    • http://mentaplywood.com/images_upload/files/55547923162.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/0debf297ce91050db6337a07b7f6a322/67308344318.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b1a0b2a02c---7497587925.pdfIn PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/62f5aae69f22882d7f927fed4ae8173d/96340389617.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/21f4b2fb98a8b42f4b3cf8ffcc8b86d2/46392931333.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=this+is+not+fame+doug+stanhopePDF 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_off00010142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10142 10860 bytes
SHA-256: e5b8ff8e4de4f0c65cac7ded443f99cbc4d3291b8950870cfbbf2b9d47041942
font_01_sfnt_off000119f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119F3 10684 bytes
SHA-256: 8be49eac6185add3588be341b4757c4fb2fee1e90f8e6197957498c1a3fe4332
font_02_sfnt_off00013b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B19 17112 bytes
SHA-256: 5d8573af19b4596cf42527e303f7e3f87f01b2866d04dc0a00276e0e59861d01
font_03_sfnt_off00016786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16786 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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