Malicious PDF — malware analysis report

Static analysis result for SHA-256 9314f2da168e3e69…

MALICIOUS

PDF

105.5 KB Created: 2021-06-28 02:33:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: eaaf21330a64393b14289fbb893fca9d SHA-1: 6dc6b8021062fdb628796c8ff2c56063286100b3 SHA-256: 9314f2da168e3e695878ec74dbcd3f3d676e05c02fc28852c9a0a421e2f1ce5b
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 0.3166

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://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3bfeed53f3---59366721055.pdf In PDF document text
    • http://bajcsidavidfoto.com/_user/file/99115152998.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607a9205ae3b6---sadoninivedixowomabiju.pdfIn PDF document text
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608646e6c0edc---30415251344.pdfIn PDF document text
    • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/270a143e9a04cd9565f2a01c093a55f3/8139277661.pdfIn PDF document text
    • http://grappin-annat-como.com/userfiles/grappin-annat-como.com/file/gilana.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd480898e2---78416549618.pdfIn PDF document text
    • http://beiks.info/public/file/30584934207.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b55c00402ac---3462702133.pdfIn PDF document text
    • http://hasici-pristroje-eshop.cz/files/file/50990089061.pdfIn PDF document text
    • https://stef-nancy.fr/upload/document/3841829907.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/2db9cd44f3a1a16d076132c892483191/15509120747.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160b7e1eb09dee---mukutizaxijusinu.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8fcd257b32---filaxetodaxifopuso.pdfIn PDF document text
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/9170888751b70dd825534df1542bcd3a/gimodofekereluxag.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16099bcc47366e---pijim.pdfIn PDF document text
    • https://securitegenerale.tn/userfiles/file/44342787072.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a01a2ec007b---kalezogaloza.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/a9b9d8c124a4fb9d9a2b460a2221c171/ramin.pdfIn PDF document text
    • http://artpolinakuzina.ru/pict/file/84644348818.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/4bfc2e2e32eaea90b8553c1662c8b0b6/pivuloxuxuxak.pdfIn PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/rvmvnt85l8a2nnbb7volgj690f/lokije.pdfIn PDF document text
    • https://diaochue.vn/userfiles/file/12398213191.pdfIn PDF document text
    • https://esz.jp/img/editor/files/xutizuzekazeresuxoruko.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/bavevosadovalevi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=how+do+you+brew+a+potion+of+luck+in+minecraftPDF 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_off00014d8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D8A 11136 bytes
SHA-256: bf20b9f435976d83819032cc2ea29a4117cc26f210481022b7c3bed75b4629fe
font_01_sfnt_off00016752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16752 19316 bytes
SHA-256: 7d4b8df295eb01558a7a9cdd4e7d08427d6727890bfdbc5cf04d2ab1e1cdd0d3