Malicious PDF — malware analysis report

Static analysis result for SHA-256 466d339640b3c4d7…

MALICIOUS

PDF

93.0 KB Created: 2021-07-13 22:49:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7e933e9f3c2b46a2932ce62698ad50ac SHA-1: 3d9311f45dffe2e4fe0ca04175f2cc633e847896 SHA-256: 466d339640b3c4d78ab02793b69c45811b911d11d76dd669283b24db92831d6e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress upload directories, suggesting a phishing or redirection scheme. The PDF structure and embedded links are indicative of a phishing attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160b490b4b42c6---relisoligalurilanumopa.pdf In PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af9ae56d099---80944004624.pdfIn PDF document text
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/4e4eaae63490c15f8d38b0501e167d4a/xejawewetuloforozun.pdfIn PDF document text
    • https://marathonroller.com/userfiles/files/nojatidikofe.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/5030452578.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a6f9678e1e---gakin.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/m1kmien8lc93k8kip0q41sk8td/35553823177.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/vvuslf782gr8edcdhcbjukrr34/66821414319.pdfIn PDF document text
    • http://karinameal.com/imgdish/files/lowanasitilatokuzosu.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088c22b84ebf---66220760636.pdfIn PDF document text
    • http://jgbt.us/pds/userfiles/files/matatot.pdfIn PDF document text
    • http://worthingtonpark101.com/userimages/mabod.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/hjgrsh6qrn0lf7kjab9a9dapvm/lobunerakisan.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608f1e8fd5637---36116730255.pdfIn PDF document text
    • https://www.analfissur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606efb443f802---puloxuzaxivejo.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160e38b06b0f2f---51097050419.pdfIn PDF document text
    • http://allprintusa.com/admin/images/file/buxejexerixefef.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160913ecc6953b---dinezikadupanuxujuwa.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/af4a5796d7542cc7e3bd2b4cb7c75eeb/573499272.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/2e4fc207ccd40edfa578f686c5474f3d/juvukivanixi.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/h5m7ra90atvb8tj6cpdrkgd0v7/besilixapufivujijabab.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160721d8010dc6---pavijexewola.pdfIn PDF document text
    • http://sanxuatbanthinghiem.org/app/webroot/uploads/files/ratidegesav.pdfIn PDF document text
    • http://chukysovin.com/img-svc/files/90017711810.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=the+man+from+the+south+roald+dahlPDF 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_off00010b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001237f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1237F 16664 bytes
SHA-256: 663874ba423946247d256f274d9d094eabb6709c5d3a5fc7f1dd05e2f9ff96a7
font_02_sfnt_off00014eba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EBA 10592 bytes
SHA-256: b8a9a50c45d65945c4dcfe4cc1328b0df44d2b2af256b9d3387826d0536c50b4

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