Malicious PDF — malware analysis report

Static analysis result for SHA-256 e190c040ad051d0a…

MALICIOUS

PDF

89.7 KB Created: 2021-09-01 10:13:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: f5667f8ecf9f08bfaadcb90f16b2fb64 SHA-1: c7f4d0d6e4c66800cd6d2dd65de673f02562b229 SHA-256: e190c040ad051d0a0c7c2a4f6e4ca3bbd86218f27ff02c1b727414e83663b909
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or malware distribution attempt. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress upload directories and other disposable hosting. The primary purpose appears to be directing users to malicious content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://crysiq.ru/uplcv?utm_term=george+clooney+from+dusk+till+dawn PDF link annotation
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c09961e8ee4---sulaveruwesidu.pdfIn PDF document text
    • https://tenekedjieva.com/uploads/file/kikav.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a87ac32c1d0---17706235140.pdfIn PDF document text
    • http://wignaccent.com/FCKeditor_2.6.3/userimages/file/20210701153323.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa45100005---sosepugiverewavexaxad.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/af864929832804f8715b00f87e87d7cf/70713169472.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607863032dc25---dumakana.pdfIn PDF document text
    • http://easytravel63.ru/ckfinder/userfiles/files/90218816911.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/16126b2e8a5871---68177980968.pdfIn PDF document text
    • https://mauspro.net/upload/files/puludafumid.pdfIn PDF document text
    • http://asiadomainstore.com/userfiles/file/fixopa.pdfIn PDF document text
    • https://adamant54.ru/userfiles/files/2831639473.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/f132cf5a659c7d2b7f86462e99347fbd/11809052617.pdfIn PDF document text
    • http://jshtextile.com/UserFiles/file///49099012003.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160712e4fb33d0---87275238879.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a9ee6b7247d---rejazikepuwope.pdfIn PDF document text
    • https://ural-aiti.ru/admin/ckfinder/userfiles/files/10513128455.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084430ea32e0---napipodetugujemal.pdfIn PDF document text
    • http://eia-edu.com/userfiles/file/9746524064.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/47270110203.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/c9cfcd0f13b890cc1b119374ceb4c667/lizegezuv.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_off0000f4f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F9 18772 bytes
SHA-256: ac712e387529cec252bc5c5033ef808cc5b60ce6961c81634e0720d5b00ed178
font_01_sfnt_off0001257b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1257B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D92 11248 bytes
SHA-256: dfa1a7619d9c6e235a371fb828920ef736710947e85993829c819e5856b598a6

Open this report in the interactive analyzer, or submit your own file for analysis.