Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0c2ed58f531b97…

MALICIOUS

PDF

78.0 KB Created: 2021-09-19 01:05:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 4b8b82f480a7ef33319fd690e906e360 SHA-1: 60f249bdc9ff42accfa76ef01ca2ecee2ba3bf5d SHA-256: 7e0c2ed58f531b97129ff199421c76eb4b98efecf1beeaa061b644f752fcc978
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV and exhibits characteristics of a phishing or malware distribution campaign. It contains embedded JavaScript and multiple external URIs, many of which point to potentially compromised WordPress upload directories or disposable hosting. These links likely serve to redirect the user to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3658

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/161302e83379e2---rawuxisidap.pdf In PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142a33f23954---47478732823.pdfIn PDF document text
    • http://adidravidar.com/ckfinder/userfiles/files/94453360563.pdfIn PDF document text
    • http://dc-07b6a75bc4d0.breakthrough-physical-therapy.com/userfiles/files/91458147695.pdfIn PDF document text
    • http://onfireinteriors.com/userfiles/zenesiwuxowezoxojik.pdfIn PDF document text
    • http://moristas.com/userfiles/files/80592452486.pdfIn PDF document text
    • http://szilasfood.hu/pic_upload/files/44522678967.pdfIn PDF document text
    • http://biometria.pl/photos_fck/file/20141544769.pdfIn PDF document text
    • http://ansing.nl/userfiles/file/25188556970.pdfIn PDF document text
    • https://benqmusicworkshop.com/fupload/file/79349686735.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161418609a34a5---suwizusikuxazada.pdfIn PDF document text
    • http://scuolascifondocortinadolomiti.it/userfiles/files/tubik.pdfIn PDF document text
    • https://ewdel.cz/ckfinder/userfiles/files/35053816429.pdfIn PDF document text
    • http://morard-mcf.fr/data/Files/27589403216.pdfIn PDF document text
    • https://www.l-games.jp/js/ckfinder/userfiles/files/30704704702.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/fhfijpm2nr69k5irv1na49k2q1/37788025508.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/2rciao97ah9r08p9k91ocjpil1/susudoxavorox.pdfIn PDF document text
    • http://castudio.eu/userfiles/files/61180610272.pdfIn PDF document text
    • http://steelbo.com/uploads/admins/u0/files/20210918044708.pdfIn PDF document text
    • http://bon-mar.com/fck_user_files/file/kasinavazojikavefulomo.pdfIn PDF document text
    • http://daltan.hu/userfiles/file/kuzivixiguxaminefuwud.pdfIn PDF document text
    • https://perfecthospital.net/FCKeditor/file/52494845457.pdfIn PDF document text
    • http://santabruna.cl/upload/file/30517179324.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=schaum%27s+outline+of+electric+circuits+pdfPDF 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_off0000dc68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC68 11096 bytes
SHA-256: 0a941411ca6964862bb596761bfa6dcdb9cafdafc25b02344fc31ec878638ae3
font_01_sfnt_off0000f617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF617 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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