Malicious PDF — malware analysis report

Static analysis result for SHA-256 5047f9a515ed2249…

MALICIOUS

PDF

105.9 KB Created: 2021-09-13 20:09:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 0efd9e10798670e97c668ab434e719d0 SHA-1: 44ed40962a874d3653991a6b84bbc51b878bab6b SHA-256: 5047f9a515ed22490483410f24c2a9363c58d8885ffe24461385bbff19e393c4
124 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous embedded URLs pointing to various PDF files suggests a link farm designed to obscure the ultimate destination or to host multiple lures. The `PDF_SEO_DISPOSABLE_LINK_FARM` heuristic specifically identifies this pattern as a link farm on disposable hosting, reinforcing the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8324

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://churchontherockuk.org/home/churchontherock1/public_html/userfiles/files/togujixoniwawadamexux.pdf In PDF document text
    • http://getrade.net/uploadfiles/file/zegij.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/18979422956.pdfIn PDF document text
    • http://old.arcnet.org.tw/ckfinder/userfiles/files/zavegunepe.pdfIn PDF document text
    • https://vientangluc.com/upload/files/69943414057.pdfIn PDF document text
    • http://aybar-gallery.com/userfiles/files/jilugifupesemud.pdfIn PDF document text
    • https://inarsindbari.org/uploads/53690918777.pdfIn PDF document text
    • http://dolekkoyum.com/admin/UserFiles/file/27535169845.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16136eb68be163---wefojidur.pdfIn PDF document text
    • http://zonazero.es/userfiles/file/376509148.pdfIn PDF document text
    • http://paulbwatkinslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wepapigunufefi.pdfIn PDF document text
    • http://tzsunup.com/upload/vewarubovomilawonujafip.pdfIn PDF document text
    • http://cantinachitarra.it/userfiles/file/xuxamadojoguxejiregobona.pdfIn PDF document text
    • https://equalland.com/uploads/File/pomobilos.pdfIn PDF document text
    • http://ezclasssites.com/var/wwww/dev-ezclasssites-com/data/files/32522062958.pdfIn PDF document text
    • https://vinasimex.com/uploads/file/20222650638.pdfIn PDF document text
    • http://bakersfield.thepokeluau.com/uploads/files/nubamutoda.pdfIn PDF document text
    • https://liho.cz/UserFiles/File/43853141628.pdfIn PDF document text
    • http://tokyoto.pl/UserFiles/file/pagedulizunenedura.pdfIn PDF document text
    • http://clevio.biz/fckUpload/file/vojegugekug.pdfIn PDF document text
    • http://gevenschoenen.nl/ckfinder/userfiles/files/zisenisesadosuke.pdfIn PDF document text
    • http://dinskayarealty.ru/media/file/wiwileponixajowosolew.pdfIn PDF document text
    • https://atkarisuli.hu/userfiles/file/78837046654.pdfIn PDF document text
    • https://auto826.vnpec.xyz/uploads/files/vurigiziporaxarovaba.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=android+app+that+runs+excel+macrosPDF link annotation