Malicious PDF — malware analysis report

Static analysis result for SHA-256 f069ba8a8e1fa3cb…

MALICIOUS

PDF

61.6 KB Created: 2021-05-12 15:42:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef596f01e990dcad52f97dd91eca377c SHA-1: 1e0f00f040b6bfb1145d24858976fe49ee4d1d69 SHA-256: f069ba8a8e1fa3cbabc269ae84336c15e4f1d7b9d4e8b87b6e4e7af4274f0da0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to external resources, many hosted on compromised websites, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier indicate malicious intent, likely to redirect users to malicious sites or download further payloads. Although no scripts were explicitly extracted, the nature of the links and the PDF structure point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8123

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://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/7caec9023d512be3cd3991c1a7c9f771/momomajozura.pdf
    • http://relocationservicesgroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb115bf69f---worogepiwugodoxutamim.pdf
    • https://paklya.su/design/img/upload/file/tuxujuroxuvamujebemalum.pdf
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/plpm71360ioge2c2ut886eht3s/92179674375.pdf
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cab70b3473---wegunurejesixevobafowigup.pdf
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/332aef033850514ce307e237a591d778/mufijumagi.pdf
    • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/vnq0lb19fkqrh1giu0kqgf937h/55878603750.pdf
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/2d6da7a069d6fc64a57f37c1ac2beef7/dulavuzemekibeboso.pdf
    • https://classicandcamper.co.uk/wp-content/plugins/super-forms/uploads/php/files/ksqtgmvgq3s6vsv9jma5g3cktv/rijabudapaxobelogi.pdf
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/8150e9a68f25a36f33e318b4f04ac151/nerigafofupazoberajele.pdf
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/uncc7jo87dgisbhsfou06lueb6/xamokevudugefubujege.pdf
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16099e17ac5973---70925598374.pdf
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608874e0aaf0c---javekiwoledupagexivolo.pdf
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f64c477f88---48695020224.pdf
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/f1b73dc464630ad40484fed672f305dc/wejorukutigegozezuf.pdf
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/vt2e6fvsfj8pvqs214porscq1j/gevomig.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=saira+narasimha+reddy+movie++in+telugu
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9eb.bin
ca4e4a60e3ed4b9cce16556978940c0c8c8daa3691ef63c9b2ff6d000c27be5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EB 5504 bytes

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