Malicious PDF — malware analysis report

Static analysis result for SHA-256 8327b9b65b67b6fc…

MALICIOUS

PDF

77.9 KB Created: 2021-06-25 21:31:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: c530b2368ec320aaa441473072a7b8b5 SHA-1: d12eb78598b096776ba74bf5740b754ae6b4840d SHA-256: 8327b9b65b67b6fc28dbbacabece84feb1e4b9235176fee533115008bc0362e6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a link farm pointing to multiple compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document's structure and embedded URLs are consistent with a malicious PDF designed to lure users to external, potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9829

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://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/14osmvanevdta65r6ca0b8d9db/25281576543.pdf In PDF document text
    • https://valve-toho.com/userfiles/file/kapuwe.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/34209202898.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/7lssa3iri58h3s9kcm6lbrp059/90680077404.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/160ad7f20c449a---javamatelofute.pdfIn PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/8cdbf587e29877587354a6f997a5bc19/pasumagojavaniba.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b842442bcc---segowaludigatasumumi.pdfIn PDF document text
    • https://aiaciran.org/cache/fck_files/file/37175285924.pdfIn PDF document text
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087c80b91595---77632758229.pdfIn PDF document text
    • http://www.majbrno.cz/uploads/files/95226329674.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607204a796b65---7570407270.pdfIn PDF document text
    • http://www.anjhimayath.com/upload/file/31562195520.pdfIn PDF document text
    • http://assushop.com/userfiles/assushop.com/file/69381567042.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/9fd8e4a4057ad0bdf0798a6e36457236/sawepas.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a66399c89a3---13212908006.pdfIn PDF document text
    • https://www.saammohaseb.ir/wp-content/plugins/super-forms/uploads/php/files/c42a962e1b426ebf59cb930f493bbcea/zewivezepenuzajuw.pdfIn PDF document text
    • http://dui-antidote.com/images/userfiles/file/66032045649.pdfIn PDF document text
    • http://czpohledavky.cz/userfiles/files/zinifojusikumirigo.pdfIn PDF document text
    • http://flexa.cz/docs/file/belewoxewadisilokan.pdfIn PDF document text
    • https://tonwen.org/userfiles/file/19026327710.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/00465c5d5afcf20b6fabcbf9af1aab8d/betepijeletexajexenuji.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/6r6ptuj9j1neji8sqn3l7gkvm7/wuwitusulafegos.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/97520092858.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a20504eb2eb---51580700182.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5a27c1fce---8879973092.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/fc16507cba32f4c9d1183f110e8dda3c/wefotutodazupitobobad.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=analyse+1+cours+pdfPDF 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_off0000caad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAAD 17808 bytes
SHA-256: 73a057bc6da57441fe8056c365d0446588ae3bbb1b1dff5f53cba1192674930c
font_01_sfnt_off0000f820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF820 10668 bytes
SHA-256: a6f8d13ade7b9f1a31e147bffbf09b515b047b1d441e90cf0367aa9e3ecb96ef
font_02_sfnt_off000110d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1