Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ccc5dd71ade2093…

MALICIOUS

PDF

73.4 KB Created: 2021-09-08 06:49:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 411f5168002328465a5208e7a617c6d4 SHA-1: bed036d38a67afe8cc69ac6b14cbae051fd1f9cd SHA-256: 4ccc5dd71ade20930c43e9bf87f12727326cff9e77d954af3b4d0daf55e87caf
94 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting it's designed to lure users to malicious content. The ML classifier also flagged it as malicious. No scripts were extracted, but the structure and URL patterns are indicative of a link farm used for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6691

Heuristics 4

  • 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://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/8cad7f766d06e22dbdac1641f5975fea/vovewuwexonawebotawedinu.pdf In PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b9870f7ca01---tosekupetu.pdfIn PDF document text
    • https://irepairplus.nl/app/webroot/files/userfiles/files/bevavewatosunosiligetaf.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/1050375231.pdfIn PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fae89b5d51---92359878844.pdfIn PDF document text
    • https://ildiko-szepsegszalon.hu/userfiles/file/25621458282.pdfIn PDF document text
    • https://genericdiabeticteststrips.com/userfiles/files/wiwukikorosamojamufad.pdfIn PDF document text
    • http://mastervgtour.by/var/upload/file/67342822736.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607a10a1b8ccd---pevipazosegavaxusewujalof.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095f901b22c1---97015157516.pdfIn PDF document text
    • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/cc5baba56d630546a5a78ee3ba994c04/29454213775.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16121a1207b8d5---mutiwofomipixidezotez.pdfIn PDF document text
    • http://beergolfers.com/blog/images/file/kizekenusaz.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1609a66f95facf---nizoteranez.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/160839699ed329---71610869999.pdfIn PDF document text
    • http://businessvaluationapp.com//fck_files/file/gurixofovonuderobubawovar.pdfIn PDF document text
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160aba5324ba41---rerosixobegizubowur.pdfIn PDF document text
    • http://thepducphat.com/upload/files/xonogav.pdfIn PDF document text
    • http://romovi.net/sgi_userfiles/userfiles/files/pemivudewujodipiju.pdfIn PDF document text
    • https://plentis.eu/ckfinder/userfiles/files/nudofuzovegefuraxosupepo.pdfIn PDF document text
    • http://medica-brno.com/files/tijorapujizoba.pdfIn PDF document text
    • http://ooexperience.be/assets/Image/files/wobamesizubuko.pdfIn PDF document text
    • http://aucoindeshalles.fr/menu/file/lexidom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=medical+microbiology+short+notes+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBE 19484 bytes
SHA-256: fd540dcdca82c314f737c08a478bc741df8a2efa29c5d6eb0e1f6ae09b2ed55f

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