Malicious PDF — malware analysis report

Static analysis result for SHA-256 56e9b4ed6ff9279c…

MALICIOUS

PDF

73.4 KB Created: 2021-09-06 00:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 718fb7d788f987681e589dc821037850 SHA-1: 10d1d37d0867b290122f085754c3892c0200b0c1 SHA-256: 56e9b4ed6ff9279ce630c48827e222a980e2e19a4673da371bacf162e1899250
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3852

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 https://philabc.ru/uplcv?utm_term=pueblos+magicos+mexico+desconocido+pdf PDF link annotation
    • http://st-johnson.com/Uploadfiles/files/ralugibujug.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c06780cd119---52798678316.pdfIn PDF document text
    • http://bestbuyfromindia.com/userfiles/file/41961289838.pdfIn PDF document text
    • https://korzayithalat.com/spot/admin/fckeditor/userfiles/file/89595850513.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160c18f128a03c---7405256663.pdfIn PDF document text
    • https://locoffice.ru/userfiles/file/mojunaronezogujev.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/15ba3b43868ec67eb37a27b1192c2056/24260456877.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099bfd448f0e---31941033926.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/9cec4c830a1b969d921e2d3296c78e52/tefupejijegozogufipof.pdfIn PDF document text
    • https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/a2ad109cefcec637b4a14c2d2491199f/jadasolusokedewojukusokik.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b902b68452c---1270170738.pdfIn PDF document text
    • http://caratow.eu/userfiles/file/fanopojige.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/lazizakisakubapu.pdfIn PDF document text
    • http://njchemland.com/upload/files/ganit.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cc29be7f85d---4967371364.pdfIn PDF document text
    • http://heimundsicherheit.de/userfiles/file/pasowusonovusajogasexile.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/35d428a438a1d4a07a35ece8ee3b54fc/65679833239.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc82b3d4bc1---14404053365.pdfIn PDF document text
    • http://architettoseneca.com/userfiles/files/28176754797.pdfIn PDF document text
    • http://videotour24.com/data/fckupload/file/9528691706.pdfIn PDF document text
    • https://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/fe4a10f8f60e9fb0ec4617d19e62f433/87765362083.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/4d57105c21f1a03a2a42bd40c061f953/92939135316.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/8649b6a7eb54c7aecea8effbe3748329/54635368729.pdfIn PDF document text
    • http://abcbyspu.net/ckfinder/images_store/files/vofux.pdfIn PDF document text
    • https://soechi.net/userfiles/file/tupiwofoxeseju.pdfIn PDF document text
    • 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_off0000dee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE9 11108 bytes
SHA-256: 254ee0e324fd499e5d2d02c3575e176950a7e1233595353a7015b429698ea2aa
font_01_sfnt_off0000f868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF868 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1