Malicious PDF — malware analysis report

Static analysis result for SHA-256 44540b1639fb6e22…

MALICIOUS

PDF

72.9 KB Created: 2021-08-30 19:52:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-07
MD5: 6277273abfcf738a209d6320c6d0e0e3 SHA-1: eb2c6326c6f34618e89c58fc8331eaf58b9a45fd SHA-256: 44540b1639fb6e22ed437c94a79120907eac5e329e277cd7eb5bed98a0b01208
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://rajatotogroup1.com/contents//files/safevepajot.pdf In PDF document text
    • http://barcabianca.eu/upload/file/25657896989.pdfIn PDF document text
    • http://www.grupoaccs.net/ckfinder/userfiles/files/58463292161.pdfIn PDF document text
    • http://arkystudio.eu/userfiles/files/13647961634.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/5862551baf3bcef2af2f287f36596e7f/jazara.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3320db7108---zolubo.pdfIn PDF document text
    • http://fipjp.com/userfiles/file/norejumalixaz.pdfIn PDF document text
    • http://skybuildinfraprojects.com/uploads/40287481617.pdfIn PDF document text
    • http://euredit-editions.com/userfiles/file/moraborajanabekadupazi.pdfIn PDF document text
    • http://hzqzg.com/d/files/43150472886.pdfIn PDF document text
    • http://globeksa.com/ckfinder/userfiles/files/magozogiruliniwisisi.pdfIn PDF document text
    • https://towa-aaa.jp/userfiles/file/mizeravemanunusuki.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160b880165d491---sumevube.pdfIn PDF document text
    • http://domadoma.cz/userfiles/file/loneguguxibub.pdfIn PDF document text
    • http://biothiennam.com/media/ftp/file/wutukadowe.pdfIn PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/22995ae143d8c4212825cea11f73f497/8292580196.pdfIn PDF document text
    • http://thamdinhgiadaiquang.com/img/files/parebovunilikudigis.pdfIn PDF document text
    • https://apc-algercentre.dz/ckfinder/userfiles/files/57215066673.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/77b678df494cf7d9be7249c8f4eecafe/wusujaxunixovedera.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acde5f709cb---62860166757.pdfIn PDF document text
    • http://thementalhealthadvocates.org/files/userfiles/file/79203529490.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160814148ab8ad---7251789202.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=how+to+increase+strength+and+staminaPDF 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_off0000bab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d2d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D0 10848 bytes
SHA-256: 30c843801a5f416ca9d1c9d2d6620a7fa8788ccf126ac7257fe9bf5cf49a549f
font_02_sfnt_off0000eb7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7D 16992 bytes
SHA-256: 8c84e556e5e5e566ee9fecf170fda1ee45aa6b0904089d31342e5d0e5d0e6f89