Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dfa8e612d385fa…

MALICIOUS

PDF

175.0 KB Created: 2021-08-10 19:09:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 4b24b1b54ba19ce41e2c02ebd61875b1 SHA-1: bfb89bfb3383921dbde4fa8c358dab30c4118059 SHA-256: c5dfa8e612d385fabc3b88ade069b11db20ccb5312c96ecfe622057cc1b9b0b0
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9510

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://irlanc.ru/uplcv?utm_term=kohat+cement+annual+report+2020 PDF link annotation
    • http://ekotronic.eu/files/file/89432262901.pdfIn PDF document text
    • http://www.clc-engineering.com/siteuploads/editorimg/file/mabefoxexizag.pdfIn PDF document text
    • http://churchontherockuk.org/home/churchontherock1/public_html/userfiles/files/15747684043.pdfIn PDF document text
    • http://envigest.cz/upload/file/luweloz.pdfIn PDF document text
    • http://live-net.it/file/mafedisira.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc1b80d542---netezadewub.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087297126be4---58283684065.pdfIn PDF document text
    • http://afgventuregroup.com/cfiles/file/merudagovaxuluvalele.pdfIn PDF document text
    • http://alde-pace.org/ckfinder/userfiles/files/8762978038.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a65da68638d---64539359246.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/6310d91e6bda00ea9a8be2bec18c0171/bobavowudizemawan.pdfIn PDF document text
    • http://sonsuadogo.org/Images_upload/files/61459301551.pdfIn PDF document text
    • http://bsp-plovdiv.org/ckfinder/userfiles/files/xuzulonaxe.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cac50373b5---xofuzo.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eb0d78a3ad---6956234924.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160bb228407815---gasesiropavopibipogej.pdfIn PDF document text
    • http://thucancakoihikari.com/luutru/files/62028405837.pdfIn PDF document text
    • https://penzion-palice.cz/content/vemikinegunidin.pdfIn PDF document text
    • http://youngshiny.com/userfiles/file/1624385339.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/s6f6bn57po6c82um6aqsqhtrc7/suwekiridakuxizub.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075d8b3e3a45---56384697025.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/30324537a5a6e581aef9dbdb203c91bc/91838171026.pdfIn PDF document text
    • http://nkcophs50threunion.com/clients/0/01/014062e559e26c1cf0711bcec4e573ae/File/36634509800.pdfIn PDF document text
    • http://apexhealthnutrition.com/newerac2c/userfiles/file/daworepafufulewagepe.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_off00023476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23476 10712 bytes
SHA-256: b307f208fad0b943473d8adfd420aaec0119b9f1bad307233fa0b9bb81b0ced6
font_01_sfnt_off00024ce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24CE8 18620 bytes
SHA-256: 8c5c5e9b0259b61760e00ecd8055e541c34fc0b23c93f29de09a5bb0c613fde4
font_02_sfnt_off00027e57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27E57 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00029668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29668 16300 bytes
SHA-256: cb22297cb345efa2b973a5529f7d34f362c2fa401ecec879e64cb16b1dda6a81