Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d28ad54115268be…

MALICIOUS

PDF

60.0 KB Created: 2021-09-04 05:06:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 7dcebdf9035f15977631dcdfd8a498a5 SHA-1: acd59a4d9dbb448d560c1ad52aa15936949add47 SHA-256: 1d28ad54115268befe7fed3f6011161e1d7676d0165bf3b2ff7d9f8e35f149d5
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised CMS uploads and disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware delivery. The presence of multiple external URIs and link farm heuristics supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6433

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://www.autodepotperformancegroup.ca/wp-content/plugins/super-forms/uploads/php/files/ig673klf1lrvk4lresc9u41prj/rozaxeja.pdf In PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16080d9dce6b79---befatixavubazoje.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7b3646082---xuguwi.pdfIn PDF document text
    • http://historia-bfured.hu/userfiles/file/33474746998.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090e4a24094d---doxixalewuwegababem.pdfIn PDF document text
    • http://goozzl.com/userfiles/files/38254334918.pdfIn PDF document text
    • http://lroundup.com/clients/d/d7/d7466da0ad72d96b64793f89c518a0d9/File/rakewekuzawaxe.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079803ab4a53---gudopu.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/01e99440a103fe5f37f62c5b1d125f2b/88648373355.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/qo9rn1qeu8dmubsj01ko5delg2/lidugazoj.pdfIn PDF document text
    • http://csc-021.com/userfiles/file/20210713220237_vmd9g5.pdfIn PDF document text
    • https://bravo-hk.com/userfiles/file/68133009876.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/59576265187.pdfIn PDF document text
    • http://permagnet.com/upload_files/file/2107302349400087814jg5ee.pdfIn PDF document text
    • https://delphin-bau.com/ckfinder/upload/files/18670375761.pdfIn PDF document text
    • http://podiummoda.ru/userfiles/file/lepusawoxawaliboluvapama.pdfIn PDF document text
    • http://konyaozgunmobilya.com/userfiles/file/41323739110.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a835d1f96d---1813520702.pdfIn PDF document text
    • http://chochosanencino.com/uploads/files/26835416505.pdfIn PDF document text
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/itp7aic0havsdb50ehb3q4vmqs/bemakibavedomiwusebijuxip.pdfIn PDF document text
    • http://dharmapremipariwar.org/userfiles/file/wavibuj.pdfIn PDF document text
    • http://vervesimuhub.com/userfiles/file/42394064758.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=texte+bourgeois+gentilhomme+pdfPDF link annotation

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