Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e7409351b094d3…

MALICIOUS

PDF

53.0 KB Created: 2021-09-27 13:18:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 92f4f79f6cf8a66098c6b3b0c67d5ebe SHA-1: 0382babbcf7d9065964520a08d23bf37d19566ca SHA-256: 02e7409351b094d3bd32e30366c5f3ee8c408b65c7d9a7e3ebfec927b77534b8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8031

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 https://oniceh.ru/uplcv?utm_term=japanese+candlestick+chart+pdf PDF link annotation
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615026b26e040---64935045701.pdfIn PDF document text
    • http://fotografieindex.nl/images/uploads/pugobedozijajejasodivukat.pdfIn PDF document text
    • http://amdind.com/userfiles/file/damenogiwugininasus.pdfIn PDF document text
    • https://affze.com/userfiles/file/53862961978.pdfIn PDF document text
    • http://abwalabamaave.com/uploads/files/88690437566.pdfIn PDF document text
    • https://penzion-pod-rozhlednou.cz/img/file/mekokisew.pdfIn PDF document text
    • http://wadsoda.com/UserFiles/File/baliku.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/24228270800.pdfIn PDF document text
    • http://tnshoppingbag.com/upfiles/file/12292763778.pdfIn PDF document text
    • http://taemyung.com/data/upload/file/94128625430.pdfIn PDF document text
    • https://eyescare.vn/app/webroot/upload/ckfinder/files/15070335779.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/7du3gapi1bjktm5hq0qctmsb5q/14161373879.pdfIn PDF document text
    • http://enkepharma.com/upload/files/todiw.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16140f1ce5446c---61639564758.pdfIn PDF document text
    • https://karate2.cdmedia.pl/userfiles/file/kifozafixobu.pdfIn PDF document text
    • http://etenindex.nl/images/uploads/lagodavatelunusason.pdfIn PDF document text
    • http://auto-spec.ca/fck/file/fixesoduzoliziduwufusigeg.pdfIn PDF document text
    • http://kag.fr/userfiles/file/10909699613.pdfIn PDF document text
    • https://xn--pssa17sw71b.tw/upimages/files/jebexowarene.pdfIn PDF document text
    • http://fillaracingacademy.cz/ckfinder/userfiles/files/xolusi.pdfIn PDF document text
    • http://vimbark.sk/editor_uploads/files/rozapesixib.pdfIn PDF document text
    • http://twfbs.com/ckfinder/userfiles/files/91658159758.pdfIn PDF document text
    • http://everestlodgelukla.com/userfiles/file/vibedaroxo.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1614af497e114e---sakarorubule.pdfIn PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/6b122341762e9018f3df4d4e813e81f9/91826998494.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cc42c5f4a6---rizumotekegepuno.pdfIn PDF document text
    • 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_off0000b6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6C4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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