Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eb52fca7a23d5fd…

MALICIOUS

PDF

82.2 KB Created: 2021-06-27 17:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 06e228b4ebf165db9b7b1bbfedbbc5d3 SHA-1: e438c51d7c12a4bd208a8dc9f8138e9d36e778c4 SHA-256: 0eb52fca7a23d5fdede75b8dd1a34ed06f475f0374a41f1f6970cd5d807ee7aa
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress sites hosting PDF files. These links are likely intended to trick users into downloading further malicious content, such as executables or other phishing documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609863088a9c0---20007172100.pdf In PDF document text
    • http://unseenadventure.com/userfiles/file/motokuxolovogawubusagaku.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/85c78tf8sicubsc2a5h82rdfl3/girelamopafimodaxebesus.pdfIn PDF document text
    • https://cafepiolho.com/uploads/assets/34811254577.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/1bfb3e1b0ae1b4a028872962b764bc56/2869918980.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ebb039b3ff---riwexu.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608227549f428---99537541109.pdfIn PDF document text
    • https://acavacecio.it/userfiles/files/sufusimurujupuvas.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcf4fbb1a9a---47347676463.pdfIn PDF document text
    • http://oio.cn/uploadfiles/files/22870500995.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/16090d941314bd---76164065106.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/282346238033.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160bec0bd9fb3a---lewovetuxunodimufevelet.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078bee60a57b---kumivenivifuzi.pdfIn PDF document text
    • http://staples1981.com/clients/b/ba/ba027a536d51c1d997ee76cae6dc9017/File/somivuremikanirusi.pdfIn PDF document text
    • http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/menirufetiwi.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607b23b016d4c---tinifoji.pdfIn PDF document text
    • http://automotiveenergy.cz/userfiles/file/rinelabevaziniropoka.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/wupipuxabibago.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/e8ecbf5e40392bc9b2b1031ff69c971e/sosunadukafub.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/cf94d6fae85334195ae00cf45a33347b/ridubufajeligerajuw.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/78e88b6f1324db1f90ed8f5f4bdecfd9/47281374424.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609db0609b397---jurufu.pdfIn PDF document text
    • http://mistralizmiryonetim.com/uploads/file/vigozaxuxonujetod.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16078456936742---nexoketodezebut.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=the+complete+wheel+of+time+epub+downloadPDF 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_off0000d9f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F1 10904 bytes
SHA-256: ce85ca66725538f62dfd98c13e60b86fef3f259eb86ce4d01be4071f0f8ffaee
font_01_sfnt_off0000f2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE0 17988 bytes
SHA-256: 62524d872e83719a44fe3decba0b2df433591870befabf038a26ca1dc5b49cd8