Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc896699b04470d6…

MALICIOUS

PDF

61.6 KB Created: 2021-09-01 23:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ee62f16ab5cfe3f5fdc4b7ff7e368ced SHA-1: 0d076a99756ef89bda0ce60ae6b9bd56b06a2789 SHA-256: cc896699b04470d6a6382d9c266bb2f7c647c35bbd1f298332151324508cdc52
154 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains a link farm pointing to various domains, many of which are hosted on compromised CMS upload storage or disposable hosting, suggesting an attempt to distribute malicious content or conduct phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9201

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 http://tweddlefoto.com/files_contenidos/upload/files/51557148811.pdf
    • http://uro-medical.pl/zdjecia/fotki/file/zotozagovada.pdf
    • https://inverpalmas.com/aym_image/files/166043775.pdf
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/4148a1c657bd538af2f0a079f9f5f546/15347685661.pdf
    • http://mazdooradda.com/userfiles/file/74525943382.pdf
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0f35bd925---fisavivirupipufara.pdf
    • http://webcertain.net/contentupload/fckeditorUploads/organization_/file/donavutiropinuruwitonake.pdf
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/f65a0a24c6d09d3d4747b5be9981b948/duvopafamabexa.pdf
    • http://w-mill.jp/images/file/76466740715.pdf
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/35a9cae1d8b6e76a203ef2d83048cf6c/34116415938.pdf
    • https://xn----8sbcehyodmtf1czh.xn--p1ai/userfiles/file/89037183972.pdf
    • http://canvangdientu.com/images/file/nojisezinunizar.pdf
    • https://honda-otolongan.com/upload/files/95126378422.pdf
    • https://ppuhperspektywa.pl/files/edytor/file/wafibusogovutitoreni.pdf
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/3ae9b9b1a8bc7ea16a2aaaf77c322684/8019155197.pdf
    • http://ahcxdq.com/uploads/file/191445566431.pdf
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/9qeu84m88j00vthajkm0660943/8398618438.pdf
    • http://ladyqueen.it/userfiles/files/27553533982.pdf
    • http://elateridae.com/images/FCKeditor/file/lokavetanefoxajowuxemuwuz.pdf
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/kavumov.pdf
    • http://www.europesolidaire.eu/userfiles/files/42700058612.pdf
    • http://citescolairedeledit.com/include/file/63170778331.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=knot+and+knotless+braids
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce19.bin
4d79065237e61f15c675ec6b955b9e3299a176e323c8c7ce2c475a0151cc61b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE19 10464 bytes

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