Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e681fa817a95b4a…

MALICIOUS

PDF

132.9 KB Created: 2021-07-25 20:19:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 42408f3c79411b2c457d69f50ea61671 SHA-1: 8082cdd19fb415559bcf795510d4f0315cf5fc15 SHA-256: 0e681fa817a95b4ad48516828c68fdd6b3b12a9e9108f01e3ff6900ed3777f8a
154 Risk Score

Malware Insights

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

This PDF was identified as malicious by a machine learning classifier and ClamAV, which flagged it as a phishing trojan. The document functions as a link farm, containing numerous URLs pointing to compromised WordPress sites that host further malicious PDF files. These links are likely intended to lure users into downloading and opening additional malicious content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8620

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://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/t8hb6se5kdmni3rqev9vk6l5tk/50641411707.pdf In PDF document text
    • https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/ac76a7684dd9759da3596e05fe58d6a5/47271965382.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8c917dbb46---25080877349.pdfIn PDF document text
    • http://greece-ex.com/images/blog//file/vexefewizaxow.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/d17856648f2e449ea21f041ee483e341/nilufanavu.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/t69ig9p0ep43rtuuah0g7ua0j1/44045310941.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7184ac0806---27487103007.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c494ae187a2---2043764763.pdfIn PDF document text
    • http://7166867.ru/ckfinder/userfiles/files/sozasutoxawuroja.pdfIn PDF document text
    • http://bensonlandscape.com/editorData/file/87288995181.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/05f09126cf312d99605cef41150fdc39/minokozopedumibonoxedoge.pdfIn PDF document text
    • http://beautybybelief.com/admin/images/file/kujedelapajib.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/aebea6fff77ae11cb75845deea3ef599/12711692801.pdfIn PDF document text
    • https://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/alr6dhm092ggakmtrmtack2kp5/tolakusubirin.pdfIn PDF document text
    • http://xtra360.net/campannas/file/vojujuxixafepunifo.pdfIn PDF document text
    • http://lblussana.it/images/file/pisafinorogirexi.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/l2sc54qjol7fifp0h143bd2t03/pebanirixeregotememagal.pdfIn PDF document text
    • http://uro-medical.pl/zdjecia/fotki/file/23168798083.pdfIn PDF document text
    • http://lhs60to70.com/clients/3/32/32806278e47d7e4d905c37b1d6ebf04a/File/11981434093.pdfIn PDF document text
    • https://susta.vn/userfiles/file/kegulujusawenikejamazitu.pdfIn PDF document text
    • http://gemculture.com/userfiles/file/17371468794.pdfIn PDF document text
    • http://beiwendq.com//data/attachment/file/dumuxuruvogevewikevarote.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160966f491bbbd---99698339803.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=direct+rule+and+indirect+rule+in+colonialismPDF link annotation
    • 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_off0001e30b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E30B 10632 bytes
SHA-256: 2a09f98dcc4474c335d701fc0231dd85008d3b49a58c94fa3e6e8c3d3edb91b6

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