Malicious PDF — malware analysis report

Static analysis result for SHA-256 a767b774f9b03849…

MALICIOUS

PDF

92.8 KB Created: 2021-06-26 22:55:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: c992ca1c2690eff230ad79d46bdf6020 SHA-1: b59861fd32b3a1e2d5baea873881c3acca718f4a SHA-256: a767b774f9b038496de4d383dc31b631f5b8f145198179a558fdf2dfcc50c40f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ee6a02d9d5---84166700716.pdf In PDF document text
    • http://bukhatirhomes.com/userfiles/file/pusorarubadasosalerarivox.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ca12a76c3c---38222708198.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/21009mbedlhn2andhpr21hi31v/99489601097.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/uli995sactcr2cp2p8u8jroei7/xorotiforivatufol.pdfIn PDF document text
    • http://ashioke.com/images/library/File/39431994005.pdfIn PDF document text
    • http://emotionpicturesfestival.gr/userfiles/file/25039213142.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c10c6c27662---kotimodunetomezefajadew.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/bb9cd58f05eb3012d20b0a228fb07d73/bataxi.pdfIn PDF document text
    • http://kencert.vn/uploads/image/files/vefiwiridaxorin.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/f99d9d432f40806a8c3581ec91ad644b/97950049967.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607892d8993aa---22809764605.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d7e3da538b---55171596281.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160ab20ab9779d---17325857029.pdfIn PDF document text
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607d42c09b325---vunam.pdfIn PDF document text
    • http://greenlivinggarden.com/htdocs/UserFiles/file/68386519718.pdfIn PDF document text
    • https://yuss.it/file/59291296486.pdfIn PDF document text
    • https://securityguardsupply.org/php/uploads/file/fuwegubetusokawarovi.pdfIn PDF document text
    • https://pergamine.com/ckfinder/userfiles/files/verixasonasa.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/5de620b26b14bbaa3fe773b4ab36879a/73770890887.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9856e220c1---sasuxubedu.pdfIn PDF document text
    • https://condominiobrisasdelnorte.com/userfiles/file/98637580973.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/kofaruludajip.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/b54d2a191c98a607f8db87004e188fcc/96881196089.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160922871a720a---88170880248.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd8e1ad0ea---89641024444.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=minecraft+how+to+give+armor+stands+armsPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC81 21240 bytes
SHA-256: b7ca1132e86263aff5ac1083dff12c75a758a30a737a0658be646c0a11fd2754
font_01_sfnt_off0001344d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1344D 11020 bytes
SHA-256: fe6ec90847631e2e8f5d22c32cb4a3c1e7fd91d7ff9bb5f95edd792c2b0195b9
font_02_sfnt_off00014da7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DA7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1