Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd158f813881eb6e…

MALICIOUS

PDF

80.4 KB Created: 2021-08-16 15:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: ceeff0ab7cf307a652f747ce6642fb10 SHA-1: 583d0ed84b7790a82afc9db51f07385b1c0dc325 SHA-256: dd158f813881eb6e0afea88ada6e8d755796a92a1a9d220729eaa0e07e357164
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains numerous links, many hosted on compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of multiple PDF files hosted on various domains indicates an attempt to distribute malicious content or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2594

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
  • 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
  • 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://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/jvpgjf4g48s19i93jnd5sk8p3d/vatud.pdf In PDF document text
    • http://alarmy-kamery24.pl/userfiles/file/43894702402.pdfIn PDF document text
    • https://www.sudburyhighspeedinternet.ca/wp-content/plugins/super-forms/uploads/php/files/86ec66cfd7e25b04c215077fc04231de/xigamomigur.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/v3g06d0aepp9h5f7k0scaunus1/76496752983.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/virupo.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/1896519a3fa60548686be4f018768f43/69169514167.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/645fe4774359014329ef0cda3cb7c50d/66187513709.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160925d048b5b8---kinodamawujago.pdfIn PDF document text
    • http://bindashnews.com/userfiles/file/pawakovetuziwopopupapu.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a02593a5d77---zujap.pdfIn PDF document text
    • http://jingchengs.com/jingchengs/ckfinder/files/20210627070750.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b49c6263698---66069949782.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160bc6281e8fb6---xividulo.pdfIn PDF document text
    • http://inglewoodreunion.com/clients/68690/File/81431638118.pdfIn PDF document text
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160778304d7b3f---85992968210.pdfIn PDF document text
    • http://heldermusic.nl/ckfinder/userfiles/files/fenepajivitarupu.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160987c2808e16---45125039630.pdfIn PDF document text
    • https://tonwen.org/userfiles/file/todubesedudetuna.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079a63bcace1---nisujisubomagupilezopeko.pdfIn PDF document text
    • https://encoregallery.us/wp-content/plugins/super-forms/uploads/php/files/4f5066f38ec37a3c2c82dc00cecc7361/87612332477.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607c861f0d060---29999245859.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d026dd90ebb---41403014318.pdfIn PDF document text
    • http://barnesfamilyre-union.com/clients/52050/File/5370001616.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b32cb9703bc---rosam.pdfIn PDF document text
    • http://www.sas.edu.mn/ckfinder/userfiles/files/nepiduvufixaxibetojowerok.pdfIn PDF document text
    • http://harrisonfamilyreunion.org/clients/868801/File/37940071262.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=proyeccion+de+newman+propanoPDF link annotation
    • 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_off0000e3bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3BD 10564 bytes
SHA-256: b7377eeffe3b73c7133fde7a5b2cc600c640caa74baa1fda236348c0f4472c93
font_01_sfnt_off0000fbd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000113e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E9 18360 bytes
SHA-256: f59d8a205b0dda85d53de4b82afaaa6cd94d93be893b21d7424d6ac2ed82a81c

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