Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7e94e8a6c11844b…

MALICIOUS

PDF

84.7 KB Created: 2021-09-11 01:05:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 530dafa4368a3c313fb1ea75930ea236 SHA-1: 4e0401ce66f8bfa719b1691f1ad0fa245913a357 SHA-256: f7e94e8a6c11844b707c55f1318c0881f7666e6d5e6817f1cdd7ca95edb50c3c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to suspicious domains and are structured as link farms. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high likelihood of malicious intent, likely to redirect users to phishing or malware hosting sites. ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/zutor.pdf In PDF document text
    • https://grandegroup.net/files/silerenosa.pdfIn PDF document text
    • https://crownprolaw.cn/userfiles/Proj_Name/files/xewivoburixifuxeju.pdfIn PDF document text
    • https://auto-rujo.com/images-editor/file/64311108580.pdfIn PDF document text
    • http://le-bouquet.be/userfiles/files/26875627196.pdfIn PDF document text
    • https://muachungbaohiem.com/uploads/userfiles/file/funakilewuf.pdfIn PDF document text
    • http://intertermo.nl/userfiles/file/75724229571.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613bc762741e8---67886729511.pdfIn PDF document text
    • https://www.tocbirsen.org.tr/ckfinder/userfiles/files/wezakopesoxoranu.pdfIn PDF document text
    • https://khmernative-rice.com/userfiles/file/49885291773.pdfIn PDF document text
    • http://kamerton.nl/clientfiles/83933597717.pdfIn PDF document text
    • http://rfaaa.com/UploadFile/file/20210911050651759.pdfIn PDF document text
    • http://mrs-edu.com/sribati/editor/uploadfiles/fubenigarenopate.pdfIn PDF document text
    • http://ssatripoli.org/userfiles/file/nuzerukadi.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/46319752756.pdfIn PDF document text
    • http://quiltingacademy.net/fckeditor/userfiles/file/3885930118.pdfIn PDF document text
    • http://terezszilvia.com/images/uploaded/file/xajelajoseji.pdfIn PDF document text
    • https://hearing-outlet.com/uploads/files/202109030950435028.pdfIn PDF document text
    • https://alquimia.in/admin/fckeditor/editorfile/juziguzutumemimefoguk.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/ip8s74m6g7avb0skvi92fgu7je/46024583291.pdfIn PDF document text
    • https://webmenuplus.com/images/file/36670016632.pdfIn PDF document text
    • https://esterkins.de/ckfinder/userfiles/files/tudalilofeg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=telecharger+facebook+gratuit+pour+androidPDF 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_off0000e356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE356 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fb6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6D 11028 bytes
SHA-256: 2fe633836a26aa8e69762291e459fddc1affbdf1b29e387aafdcabb023255341
font_02_sfnt_off00011492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11492 19272 bytes
SHA-256: 83d5dd9ec8c903365b6ba9ba59dacf53f1ecfd0262108f9cc04f3c0dd2edfe8f

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