Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8cb80c4f819e24…

MALICIOUS

PDF

107.9 KB Created: 2021-07-24 06:08:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: d4affa489fc83854766f8772643b7eca SHA-1: 8933ae7d7482ad86f7eefd27c212d5bb20888092 SHA-256: aa8cb80c4f819e24262acb8a48f97679079e5a2b004d97ae47ae95c83803025f
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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 http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/ac456c5bb18ee3052576e04c55157d30/9552785296.pdf In PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/mg9vhec6va1m0lf30u7nv335a7/11988020210.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080202778224---supixipiru.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c17c70237a9---duvovegedovaro.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607f612b9a8b1---bonuj.pdfIn PDF document text
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/cbb2c848e9294084af66057583debc7e/rowupadamemufikenotuj.pdfIn PDF document text
    • https://jajugroup.com/ckfinder/userfiles/files/48593607484.pdfIn PDF document text
    • http://nowyhotelik.pl/userfiles/file/wogitunovu.pdfIn PDF document text
    • http://www.makattakasinti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0eccb6cc8---85515766854.pdfIn PDF document text
    • https://gloriouz.in/ckfinder/userfiles/files/77187832698.pdfIn PDF document text
    • https://fobh.net/userfiles/files/soxudomadesibepogevateni.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a076a17001---59471199874.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/pvf59po9uhddr9pkemtjnq14v4/batupavifuxeju.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a8af49ba4b8---80158356673.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16092ab6112cbf---gavibenopagudodabo.pdfIn PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/f6c3d611ac3adeba604713ac33b54ac9/nozowifezasapip.pdfIn PDF document text
    • http://www.propper-droppers.nl/files/file/rapisafin.pdfIn PDF document text
    • https://speeddating.lt/speeddating/ckfinder/userfiles/files/71958648219.pdfIn PDF document text
    • http://jjinline.org/file_upload/file/22010216151.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/071dj6brvcbqpr27194i19pa5j/15754568212.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/febebenuvesodifafexi.pdfIn PDF document text
    • http://www.greenfield-sustainability.com/images/files/37684602227.pdfIn PDF document text
    • https://led7.ru/file/54826639698.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=what+is+phenomenological+research+paradigmPDF 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_off0001423c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1423C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00015a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A4E 17476 bytes
SHA-256: 242f0d983a28d85df6c27b7745560443fbe8be7f1449dd16fd8f859f475383c2
font_02_sfnt_off00018811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18811 10956 bytes
SHA-256: ccaf4938216b5c4fab4df42a85c2d144ff520ebd0bb7a9da5ad3d6c88ad02e6b