Malicious PDF — malware analysis report

Static analysis result for SHA-256 f29f45c10220f7a8…

MALICIOUS

PDF

63.7 KB Created: 2021-09-22 10:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 1d0867dbdb2c01e1a92182e6dba6af75 SHA-1: 1640db7c19ad65b2f9d281868390f53dab146795 SHA-256: f29f45c10220f7a8be770c436afbd17ba6328f0e5ee4ee64c4eb7f4c86868598
174 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs pointing to various websites, many of which are hosted on compromised WordPress installations or disposable domains. The ClamAV detection and ML classifier indicate malicious content, likely phishing or a downloader. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document's primary purpose is to act as a link farm, potentially to distribute malware or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5435

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://queure.ru/uplcv?utm_term=backup+mms+android PDF link annotation
    • http://american-security-inc.com/assets/ckfinder/userfiles/files/gadevurunagoxibalukumif.pdfIn PDF document text
    • http://dailitara.lt/bites/uploads/file/kosefati.pdfIn PDF document text
    • https://247christianity.org/fckeditor/userfiles/file/titavipufexivijetekosotu1631749386.pdfIn PDF document text
    • http://chicopharm.com/upload/files/tolit.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/16141277f337c4---woratudulezenifajida.pdfIn PDF document text
    • http://yeosingol.com/FileData/ckfinder/files/20210910_DDC78CC638E69A7C.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16134a1a2ec9a9---2172703796.pdfIn PDF document text
    • http://185.33.116.145/~acus01/upload/files/soguw.pdfPDF link annotation
    • http://clinicaveterinariaalbese.eu/userfiles/files/38007963263.pdfIn PDF document text
    • https://texigo.tw/upfile/files/2021/09/14/xifixofijojinemezuwutilog.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16143fdc3ca939---78986797605.pdfIn PDF document text
    • http://jainfarms.com/uploads/zogeponogeninipase.pdfIn PDF document text
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/a9d6fd06ab119dc459f2aa25fcc153fb/40513309893.pdfIn PDF document text
    • http://maivietnamesecotati.com/uploads/files/15485372288.pdfIn PDF document text
    • http://ibshop.gr/uploads/_uploads/files/49862097324.pdfIn PDF document text
    • http://express-service-auto.fr/ckeditor/ckfinder/userfiles/files/67782037461.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612eeb56234c8---lewulid.pdfIn PDF document text
    • http://naszemotyle.natura2000.pl/imgturysta/files/nipezomo.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/b290b5c24fecce5e4fc521e44616adbc/62838116931.pdfIn PDF document text
    • http://onlinetradeshow.ir/uploads/files/votepixuxogunoderamok.pdfIn PDF document text
    • https://learn-atdi.com/uploads/files/vavapinibazikojumomorej.pdfIn PDF document text
    • https://cubic.is/userfiles/file/8821891909.pdfIn PDF document text
    • http://wangyiphk.com/userfiles/70994087197.pdfIn PDF document text
    • http://123flower.doweb.kr/upload/files/58787841473.pdfIn PDF document text
    • https://dalba.net/other_files/File/gisefibalazobinufupaxo.pdfIn PDF document text

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