Malicious PDF — malware analysis report

Static analysis result for SHA-256 d62ed97c409e96d5…

MALICIOUS

PDF

69.3 KB Created: 2021-07-30 09:32:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: db94c17395d352454e900435f2c72db3 SHA-1: 366d28b67d8197204a3fad1939a7ce97c9e14e03 SHA-256: d62ed97c409e96d5135a9afdbc1beef939903322251cea888288ca6897b766e3
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and contains embedded JavaScript, indicating a potential for malicious activity. It also features a link farm hosted on compromised WordPress sites, which is a common tactic for phishing or distributing further malware. The presence of external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic further support the conclusion that this document is designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3516

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/2172bebf55eac879919ffd7c6c5cf32f/68293007743.pdf In PDF document text
    • http://weberstellen.ch/userfiles/file/1719800000.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160877f5f2817b---18646306800.pdfIn PDF document text
    • http://ccspatti.org/userfiles/file/33307399274.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa1d1c1d6bd---vigofizeb.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607a443ab502b---nufaxiluwakiketifedaros.pdfIn PDF document text
    • https://bravo-hk.com/userfiles/file/72252090861.pdfIn PDF document text
    • https://xn--mgbaf4adbs1bd2i.net/upload/ckfinder/files/kivutofopaxibovekom.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/56c2526ce44c7b7de6ceb5367cdbf2f0/moxitiwo.pdfIn PDF document text
    • https://shipnhanh247.vn/asset/files/welutovivenifumuduzasaku.pdfIn PDF document text
    • http://www.jobsincrete.gr/images/_user_na/file/87455331356.pdfIn PDF document text
    • http://vtdsbinhthuan.vn/public/uploads/userfiles/file/65479716857.pdfIn PDF document text
    • http://prime-standard.com/piceditor/file/77709014594.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1778a6749e---xulevekedamekegudokat.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160772f65b726b---lidobaripigurajakasevol.pdfIn PDF document text
    • http://shuimotongyuan.com/userfiles/file/bogokumoruzebezo.pdfIn PDF document text
    • http://amandatour.ru/js/ckfinder/userfiles/files/mugakalaziromonise.pdfIn PDF document text
    • http://sakaryakasaplarodasi.org/userfiles/file/voranafibetimifutovu.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/e85548ed3256188f2a68dd60f590cb6b/24499781282.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/vasugifaminulosizubu.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16098b49713a9a---30674829093.pdfIn PDF document text
    • http://azbuka-d.ru/ckfinder/userfiles/files/94784180634.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba4ecdb654---durenevu.pdfIn PDF document text
    • http://nawooelcs.com/upload/userfiles/2021/07/files/210707203100.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081d827d6b41---41165409569.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079a6cdb43d0---zanokukapiranubadowabati.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=how+to+use+ecers+score+sheetPDF link annotation

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