Malicious PDF — malware analysis report

Static analysis result for SHA-256 e531202d8e8705dd…

MALICIOUS

PDF

91.7 KB Created: 2021-07-07 02:17:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e101aa221a887cfbe732c853ae8b83a6 SHA-1: 5761533c0c636ee784f9486c5bdf96bcbf1117cb SHA-256: e531202d8e8705dd3f19eda9098a9716f61a3d8598231423e6ab6208aeeef050
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains a link farm pointing to numerous domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting an attempt to distribute phishing content or malware. The presence of embedded URLs and the nature of the heuristics strongly indicate a phishing or malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://queure.ru/uplcv?utm_term=how+to+lose+arm+fat+without+weights PDF link annotation
    • http://chrislahoda.ca/userfiles/file/164152176.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3b785b8477---13928827877.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a816b454c5e---56837728135.pdfIn PDF document text
    • http://doubletroubels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3dfe0d3ba---6513848691.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/66820970157.pdfIn PDF document text
    • http://exclusivelimoservice.com/ckfinder/userfiles/files/40462207046.pdfIn PDF document text
    • https://widepolymers.com/userfiles/file/39938765366.pdfIn PDF document text
    • https://dacola.com/upload/files/45571863209.pdfIn PDF document text
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/tpjm9ru8ng6e8slhlnbu9ovjc4/64112361545.pdfIn PDF document text
    • http://bkdesign.ee/userfiles/file/19070839832.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/ccc7ad82f4158bf8b72be42763c3b639/1362483988.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/f92273891c3292a00ef05bff5b32c072/91111390232.pdfIn PDF document text
    • https://btegypt.com/file/binudeni.pdfIn PDF document text
    • http://kpotplace.com/uploads/files/14067234641.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3ea783c66---79011161316.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e9e4ef0344---jurulafuxofotikopositu.pdfIn PDF document text
    • http://sk-uralstroy.ru/uploads/files/sigojiditibofazotami.pdfIn PDF document text
    • https://apinero.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076bbe5e6a3e---47062843234.pdfIn PDF document text
    • http://archinfo.ru/uploads/file/xanukezez.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5db0ae0a07---26241228939.pdfIn PDF document text
    • https://aparcaderoshaddaichile.cl/uploads/images/files/dadubokima.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/vuslkscalk8tqjccg7uqg1emlc/2938659057.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/suxigutawimolesizawejerub.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/9e0157efaa6cd72d3aa8b0785718491a/vomuvovusiguzetoxir.pdfIn PDF document text
    • https://euroroma-bg.org/files/file/lujoboxivololomedesil.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_off0000ff67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF67 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11779 19556 bytes
SHA-256: b179ff1032be9f9f17690c6705cb31b41cdf48e93d404d6d9b831e2d82061b5f
font_02_sfnt_off000148b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148B5 10732 bytes
SHA-256: de0c707fd5c5a4425d40c81964e87eb488b762cba85ab39e41a6d62817ac69f0