Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f5b54b738b0774…

MALICIOUS

PDF

73.1 KB Created: 2021-06-28 11:57:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 2e11178b37490efa90637ed99034f6a0 SHA-1: ec3e45d1e91309c80c71d9b8de125b61d6bd7fe5 SHA-256: 60f5b54b738b07746ff596ea9e8bfb126d9620868e1ae10873fab0dc555239b9
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs that point to compromised WordPress sites and disposable domains, indicating a link farm designed to lead users to malicious content. The ClamAV detection and ML classifier strongly suggest this PDF is a phishing or malware distribution vehicle. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://synerhu.ru/uplcv?utm_term=how+to+put+pages+into+one+pdf PDF link annotation
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/16075d5142b286---16355071926.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608cebaa5892f---64944573155.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0b3d8866c9---texuboz.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/5a5d1e4ac777a71bfd33bf77a6c22d93/belamatalawezoduraxev.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3b36c3641f---laxibozinututiwikete.pdfIn PDF document text
    • http://livingkaneohe.com/userimages/dowejenujeza.pdfIn PDF document text
    • https://steammining.com/userfiles/file/35663124123.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acc9b9e0b9d---41410814360.pdfIn PDF document text
    • http://www.celso.org/download/3381269404.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/cua9d8qqmp094nk73epa09fk57/23686165785.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c9b0d969076---6008006990.pdfIn PDF document text
    • http://nessium.net/userfiles/file/40957754662.pdfIn PDF document text
    • http://talk200.com/admin/admin/uploadfiles/file/robidugavetumo.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607401188ab5e---15873252926.pdfIn PDF document text
    • http://shssailors1969.com/clients/3/36/366f78b21138e0f8005dfe6cc5e09e30/File/siwomarowa.pdfIn PDF document text
    • https://hagepoorter.be/files/files/ruwawinoronakuxoxali.pdfIn PDF document text
    • http://ldbell1965.net/clients/85689/File/bogonixedodowaxomupixugef.pdfIn PDF document text
    • http://chinajnbt.com/images/upload/File/47172971664.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a3f1a73caec---varepetitavibuw.pdfIn PDF document text
    • http://americandeliorder.com/uploads/files/47793197460.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/5cebg1o8ttt4lo17dc2bln6o0g/rilibejujakema.pdfIn PDF document text
    • 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_off0000bc23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC23 16532 bytes
SHA-256: 9d6b9e405bcfc73260a73e60f285cd8c332c974e8ddfbe7205b9746914390192
font_01_sfnt_off0000e6c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED8 10704 bytes
SHA-256: d125a252fa95fcd0c398a459db9ca9c3f052f3e678f422442a029a7eb319ee73

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