Malicious PDF — malware analysis report

Static analysis result for SHA-256 fccbd526edc8586a…

MALICIOUS

PDF

82.4 KB Created: 2021-09-03 13:34:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 6cff1762ce3c1fac2de2f6e3dca6a5ca SHA-1: 29a25daa37e0a204ea670a2bd227a0c026fb8eb6 SHA-256: fccbd526edc8586a6e16e3dceb3400b51367a665da9e1d6c5f9eed6a03111c18
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The file's structure and embedded URLs suggest it's part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6051

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://smidgel.ru/uplcv?utm_term=individualiza%C3%A7%C3%A3o+da+pena+pdf PDF link annotation
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/7c475310262fc5c39c645fdd4ee737c4/kikoverugokimorazolokine.pdfIn PDF document text
    • http://cbcom.fr/ressource/site-image/files/67076216684.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608820ec00554---muzim.pdfIn PDF document text
    • https://www.tahitotfalu.hu/ckfinder/userfiles/files/246826197.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/287fb053ce8e6b918a2d3741c25ad258/bigelomenegijaje.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/6fc880275106db0823ff454ef555686d/lifuzamuwig.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/bcee226b9554e9de5c4ef9be090ac97f/37598018114.pdfIn PDF document text
    • https://corianderedmonton.com/ckfinder/userfiles/files/rominabo.pdfIn PDF document text
    • http://szyldkj.com/luodan/images/userfiles/file/2631150391.pdfIn PDF document text
    • https://bikidi.com/UpFiles/WebEditorFiles/file/mipubo.pdfIn PDF document text
    • http://chrisdepanneservices.com/Sites/cds/files/41634895654.pdfIn PDF document text
    • http://nordicaluminium.ru/userfiles/file/63818942057.pdfIn PDF document text
    • https://office-agglo-larochelle.fr/userfiles/file/80184363046.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/xasitogeta.pdfIn PDF document text
    • https://jackyrouxmethode.com/userfiles/file/dafetisejovos.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/8ae5522084fc871326730ff3b8386812/78750896745.pdfIn PDF document text
    • http://lg-palette.com/upload/files/20167240887.pdfIn PDF document text
    • http://smwiarus.pl/ckfinder/userfiles/files/vavabikijexanelilozuvav.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/5ccc0d95166e086192e144d3f934c8f2/41590719786.pdfIn PDF document text
    • http://easyreturn.store/userfiles/file/wigol.pdfIn PDF document text
    • http://eclickapps.in/userfiles/files/wixoxeleleruxivisetorusi.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/b24a71f6776ea4e21f2e2d82e9d60a08/49056524939.pdfIn PDF document text
    • https://alate.org/admin/fckeditor/editorfile/67535476804.pdfIn PDF document text
    • 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_off000108a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A7 10764 bytes
SHA-256: 127b6be35984895330c793997c6ea59930574e50f79762bf7ab3b61e79273ad9

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