Malicious PDF — malware analysis report

Static analysis result for SHA-256 df5e978513988436…

MALICIOUS

PDF

58.0 KB Created: 2021-09-03 14:19:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 242da78d05ce1a7adecc28a2cc94c937 SHA-1: 274ce6273629583e0ec54c890d4056c44dcd49c9 SHA-256: df5e9785139884363e52f27eef353bf506d16f945435081ef0d27f30ead1b1e3
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7666

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://medvor.ru/uplcv?utm_term=random+acts+of+kindness+cards+pdf PDF link annotation
    • https://kaxtongroup.com/home5/maxconne/public_html/kaxtongroup/assets/images/newspostimages/files/kasijopule.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c39dd2fce7---vamiwakojunowopit.pdfIn PDF document text
    • https://perfecthospital.net/FCKeditor/file/zajofodemadamat.pdfIn PDF document text
    • http://tauzetaques.com/clients/1/1b/1b95303171b4519794d6fee637ef680e/File/datudololefikewalinazugaf.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160f1a9b8a675c---zajivetelitokuvused.pdfIn PDF document text
    • http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa4deb79d10---jagofosixufiruwimawikap.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/mumixiromifukagiradusu.pdfIn PDF document text
    • http://gmei.lt/ckfinder/userfiles/files/xetuk.pdfIn PDF document text
    • https://agenciaboom.com/wp-content/plugins/super-forms/uploads/php/files/09ashtgi95iu773ftlh9tm1dh5/41121267774.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/3r7uim5bbucg3hi8j9tplu06b5/18766243231.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160919105b5bef---tuwekipurited.pdfIn PDF document text
    • http://hkxhjfc.ltd/uploads/files/20210801184251.pdfIn PDF document text
    • http://beamstraffic.ae/amb/userfiles/file/wakijamino.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7959d127b8---28133108483.pdfIn PDF document text
    • http://ibiforstarlight.org/clients/3/3c/3cfcca4e360ca8807b7dd7d6e7cbeae0/File/33044919938.pdfIn PDF document text
    • https://deltagroup.bg/uploads/file/95995224850.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1606d53f751b39---18934190218.pdfIn PDF document text
    • http://kirilmazbardak.com/userfiles/file/85722755782.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c8d343f01---16295107832.pdfIn PDF document text
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/f2da2b4c0cead01840f44eb7f5b4d23d/89483013251.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd82542547---bazafoxaxuzuw.pdfIn PDF document text
    • http://nelly-design.ru/upload/files/13639349399.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb7456487fe---buzevoxojoturuku.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/vulolugaba.pdfIn PDF document text

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