Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5e2701e50975f90…

MALICIOUS

PDF

93.7 KB Created: 2021-06-30 13:04:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 9716a9c70261d15c06f03a1785e879fc SHA-1: b35b9bb96462f9eeb91ac76b8d8bce4adef3f05b SHA-256: d5e2701e50975f907a765c4c05cf12ef0d4c7f69bb311a40ff26e9b0d44aa1d2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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://irlanc.ru/uplcv?utm_term=time+for+a+runny+boiled+egg PDF link annotation
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160948838e3767---20184967719.pdfIn PDF document text
    • http://xoblates.com/clients/e/e0/e08cfb93fb97b00c28394d0532709dc9/File/9525198661.pdfIn PDF document text
    • http://semineebrasov.ro/printuri-fi/files/basowevejegapunop.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/518cb08f14ad5bf8986148b47e4eba99/mexozobugitafide.pdfIn PDF document text
    • http://luvnchrlysenglishtoys.com/clients/861429/File/kajupo.pdfIn PDF document text
    • https://digireg.org/upload/jugufimekoviluwivijabaw.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/1tumap5idd8l9etp6plgunh8el/63455730663.pdfIn PDF document text
    • http://lamekatus.ee/uploads/ckeditor/files/25356454291.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a50bea9c49---zusiwuvetudaped.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160cc0d12a8df8---legik.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609ff4adc346d---84689707622.pdfIn PDF document text
    • http://evohome.pl/userfiles/file/55223495490.pdfIn PDF document text
    • https://capecoralliving.com/media/file/xulelemolevotelomeligexiv.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/16072394236642---nisasujegogapusubuxebela.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160836bc7da49f---20428910452.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c958bba7659---zudevejegu.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16082a7a3782de---girojilunumiwifok.pdfIn PDF document text
    • https://arichaindia.com/userfiles/file/51938627781.pdfIn PDF document text
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/034da8e7b1db6f587ea07a0bb4171a49/53315609303.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089d4a88f620---gozuxaxebose.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609fed804c216---jorajupisezexasazepulu.pdfIn PDF document text
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/370a2ed0d9cd98a1c32bdf01c010f159/13032139750.pdfIn PDF document text
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/60b015q66pvabg2vmg0shs2fe9vnatm6/56838441057.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/6de820e930e3587cc4ac9f08ab34ec67/28879059480.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/d4e682cdc3dd2fbc0b31cb47c9e87a3c/9615343912.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EF 18396 bytes
SHA-256: 8d20f48ba3893b24cda46032d3d12269e8a0fb0a934bd9d1df76ff1f6e35bdbc
font_01_sfnt_off000120e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13900 10748 bytes
SHA-256: 899d6d8d1f0a43de8e9b756ec1afbb4097ca65b70c6ccfeed57cefd85de578c2
font_03_sfnt_off0001516a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1516A 16320 bytes
SHA-256: 281a8e0f5d6ff93c8b68c010f229fb6ad7bb76303726e8bceb98a17be6b52fdc

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