Malicious PDF — malware analysis report

Static analysis result for SHA-256 b36af45a2ff388e5…

MALICIOUS

PDF

66.5 KB Created: 2021-09-18 16:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: aa35de4e43da7d1513c57bea5bfae473 SHA-1: c407d8c21a2a5edcc09ff8ff140e551e6e3535aa SHA-256: b36af45a2ff388e5cb553a3de5b1d0b0e52b4686d86f17a1eeae394c7605eaa3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm pointing to multiple compromised websites, likely intended to trick users into downloading malicious files. The presence of external URIs and a link farm on disposable hosting suggests a phishing or malware distribution attempt. ClamAV detection as Pdf.Phishing.Trojan further supports the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6235

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://irlanc.ru/uplcv?utm_term=download+whatsapp+untuk+jelly+bean PDF link annotation
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16130299991c2e---motugajagasimatupujo.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614288979c15c---94442413134.pdfIn PDF document text
    • https://qpshouse.com/upload/image/file/maxuwisijuxilirumugojaf.pdfIn PDF document text
    • http://artattack-concerts.de/files/file/dufofotuwa.pdfIn PDF document text
    • http://020tzs.com/baige/images/userfiles/file/sabosuloponewupex.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c12bcaf644---wupepujirex.pdfIn PDF document text
    • https://funcarele.com/ckfinder/userfiles/files/42672880524.pdfIn PDF document text
    • https://dadrarad.ro/userfiles/file/dizujupif.pdfIn PDF document text
    • https://transdeliveris.lt/userfiles/file/77724776583.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/48025608504.pdfIn PDF document text
    • http://artkulinaria.pl/sites/default/files/file/momonomisomixale.pdfIn PDF document text
    • http://contrast.no/ckfinder/userfiles/files/wimiralenarika.pdfIn PDF document text
    • https://fengshan-zhennangong.org/upload/ckfinder/files/97536866866.pdfIn PDF document text
    • https://www.sudoku-cool.com/ckfinder/userfiles/files/dixegilezudoboti.pdfIn PDF document text
    • http://artepcb.com/upload/files/beribosetavurimas.pdfIn PDF document text
    • https://nacituran.com/userfiles/file/gapoloronazaf.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16134ab443a5a0---zemesazorelirivolosa.pdfIn PDF document text
    • http://farmandari-sarvestan.ir/images/news/files/52182299853.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d5639aa86f---46505627753.pdfIn PDF document text
    • http://khunghinhdepphuctin.com/media/ftp/file/3476914906.pdfIn PDF document text
    • http://speakingaboutnetworking.com/ckfinder/userfiles/files/92107317537.pdfIn PDF document text
    • https://iohrp.org/f_files/files/29959493715.pdfIn PDF document text
    • https://kham.vn/userfiles/file/benusufefapaliw.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/0009e3c0668fddbe3facf4922f8b0002/90625968419.pdfIn PDF document text

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