Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d963eb9b3211b36…

MALICIOUS

PDF

78.1 KB Created: 2021-08-21 12:55:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 52aba4e207bacd6ca6d4e0b99365dde2 SHA-1: 397c7c8fd7deef30106c8eaa21230deccc5e17b0 SHA-256: 5d963eb9b3211b360f616fb51c5a11bc57c119cd4b5c1d73856c363a8f671781
154 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to multiple compromised CMS upload storage locations, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were directly extracted, the structure and URL patterns are consistent with malicious PDFs designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7969

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://alkanboya.com/files/file///werelitiwiraxez.pdf In PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/048448ed9121d6932291960fe31a8a69/27964064029.pdfIn PDF document text
    • http://privateeducation.sg/verzsape/demo/upload/admin/files/gemosade.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b60fe1a0f3f---97171034909.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/5da8cb974b8f021974b4e99a68d58740/lunovojijuwuxif.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094a600e6ebb---zefobejon.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/vakotubowu.pdfIn PDF document text
    • http://diamant-x.sk/UserFiles/file/11113914938.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c105ac66ae3---jotife.pdfIn PDF document text
    • http://krevue.cz/UserFiles/File/88646267320.pdfIn PDF document text
    • http://www.urbanwaterways.info/files/beboweponanuxaxegezox.pdfIn PDF document text
    • http://www.gonouvellezelande.com/files/39195510516.pdfIn PDF document text
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/hh40nj17dt9a8dsha05tabpli7/6645769420.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070348d5703b---faxunilapasa.pdfIn PDF document text
    • https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/n28s34ap5e4s90v70l1rlfspj1/wokawovegedafumigajudaj.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/rhutnnn00ek9la2ok90gd9btp6/28927044088.pdfIn PDF document text
    • https://akrmedia.no/ckfinder/userfiles/files/5655406968.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b9119a320e0---kanapodim.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/padutexuroveginofefazosuk.pdfIn PDF document text
    • http://businesslegalgroup.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/ribatevufizesukumadexa.pdfIn PDF document text
    • http://ndt-tl.ru/upload/file/8212911856.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+hold+right+hand+guitarPDF 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_off0000e545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE545 16912 bytes
SHA-256: 2bcef6f5a1bb40ba36317e56ef2f1d2bd16b4ae362402c1a21b299188917fa37
font_01_sfnt_off000110eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110EB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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