Malicious PDF — malware analysis report

Static analysis result for SHA-256 29b6b11f8e2fe095…

MALICIOUS

PDF

87.7 KB Created: 2021-07-31 06:02:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: ba17ecbb89a0b9a6a8ede62b8255133d SHA-1: 1852221eb12024c3206e5437336ac996916d3541 SHA-256: 29b6b11f8e2fe0952943e1897483e3910ba4855be58901d7e5554eb838388956
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains a link farm pointing to numerous distinct hosts, including compromised WordPress upload storage, suggesting an attempt to distribute malicious content or phish users. The presence of a 'LOLBin token sequence' in the document text indicates a potential attempt to execute commands or exploit vulnerabilities. While no scripts were directly extracted, the overall structure and URL patterns are indicative of a downloader or redirector campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3897

Heuristics 5

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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 http://precedent.by/_newsite/images_from_html_editor/file/72016314827.pdf In PDF document text
    • https://accuratesearch.com/userfiles/file/bifalorogifijaj.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/87c2ad06267691f31f99536d88230561/buvizasinalikujo.pdfIn PDF document text
    • https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/d05b9d26207d64f922a38e2ee3a46334/fegasedosetorogowikijazad.pdfIn PDF document text
    • http://artin-intranet.com/ckupload/files/3422843784.pdfIn PDF document text
    • http://matchedtubes.de/userfiles/file/20227615682.pdfIn PDF document text
    • https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/8dfea4551827d8e37b1e802de587adfb/rinelaxurubakojuvenolagep.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/16492853788.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1608ceb36327ba---nuvamabiwibawibodibova.pdfIn PDF document text
    • http://shlawllc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/ligumazawoturuwanurazu.pdfIn PDF document text
    • http://dermalab.pl/userfiles/file/kuloxevu.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/c6ao6fc1ic6bk76fnbfj8dmbj6/jitejitokixifave.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/snuaoqrf2ejt7ikqgkg5g66e28/24617676459.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f7a9acedf57---tesago.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/f6b42d3e2c5f3c5304693b600667d93c/saketosugomekeratome.pdfIn PDF document text
    • http://iltorg.ru/upload/file/54105923045.pdfIn PDF document text
    • https://desense.eu/uploads/wysiwyg/files/ludepadufajel.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f34f8e7171---39477609804.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/b1cmda04g69aldlaqm18clsine/witux.pdfIn PDF document text
    • http://mikomisushiwc.com/uploads/files/bigudun.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd0e8b84f9---38835368313.pdfIn macro / runtime command snippet
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/47staa8q1ajo7imf6addimjq5b/61127215265.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca04e91f6d8---10434017671.pdfIn PDF document text
    • https://vieiras.pt/imagensprodutos/file/93098171822.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6ea5be6d86---befedobijekisefozivedate.pdfIn PDF document text
    • http://mikomisushiwc.com/In macro / runtime command snippet
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=khatrimaza+full+hd+movie+720p+dual+audio+hindi+downloadPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000110bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110BF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000128d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128D6 11188 bytes
SHA-256: ee43e131e2fd22ed1a1c4a7d3e50a9166ccf67b00aaadc2a6d3a5afcf55fe792