Malicious PDF — malware analysis report

Static analysis result for SHA-256 073c5d60471552bd…

MALICIOUS

PDF

79.3 KB Created: 2021-06-26 19:54:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e56379221b5f9853297030b0527c31dd SHA-1: 69d6c4f55f39d2cd0a29121c4c2751df2c12e49f SHA-256: 073c5d60471552bdfd11bd84ad659d6ce8d6e8c20af0d61a547b7be700711b18
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous URLs, many of which are hosted on compromised WordPress sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. The structure suggests an attempt to lure users to external sites by disguising the PDF as a document download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9933

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://odpadykj.cz/UserFiles/File/sadikebigi.pdf In PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab9417446c9---24269145911.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/105citjev3h3mnt1l4v4cermg6/sitobe.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/rqgokcj46hlncna1jilskhettb/lajixegigujibipexog.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608f4fdccc94c---649891728.pdfIn PDF document text
    • http://tamlaproject.com/userData/board/file/lezasuzisijupudif.pdfIn PDF document text
    • http://bwc.lt/i/rozodizerelaf.pdfIn PDF document text
    • https://sharadsangam.org/UserFilesTwo/file/43615490649.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160d21c61b3b60---94794087141.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/e8f3e67a1c4309cdf3fa32d4d6555222/90674381976.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b575c539e68---16212073817.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c846548521---61042375419.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/cc854rh6sibbbaf59m0avnm4g6/jinewabokul.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/fqpqjjo13r24la8q5e1u59rihj/lavevekaxifotujajupojoviv.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/783a01dccd26ca9e38539ddbf873e22a/gewepanasire.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/vijabadiruziposisel.pdfIn PDF document text
    • https://doanhnghiepvietnam.org/img_duhoc/files/vekoxawusowuximuw.pdfIn PDF document text
    • http://kayamedbursa.com/userfiles/file/71389829419.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/55a682642687bb3282ddfdc69e639f14/62883667547.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/i04mci7m03iiet2l1ialbv4kk3/rutumak.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/a04c1dd277b0b54cc272f42cd10f17a0/12209484620.pdfIn PDF document text
    • https://flardochform.se/userfiles/file/32958512370.pdfIn PDF document text
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/48a03e209c6d47261fe0d36b4245a6a8/76724445757.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=the+phoenix+and+the+albatross+book+pdf+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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bcd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCD1 10980 bytes
SHA-256: b9d115a2d8ad6cedef636cc2f019fc5a166c579033d699c2b99b87d574b48276
font_01_sfnt_off0000d615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD615 16696 bytes
SHA-256: 06d86b41aa0754a4af5489f58dbe0e9ef4d67448d8e7d72a4b7bfcabcc8a34f8
font_02_sfnt_off0000ffda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000117eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117EB 16620 bytes
SHA-256: 9ad1bb9d091bd524cec1b4aadd89feb2073094db98b2f0d73e716a587821a9ae

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