Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb140b07a0460a9e…

MALICIOUS

PDF

90.1 KB Created: 2021-09-17 18:09:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 949f588d2074adc7f9483587ea231ec3 SHA-1: 5716eb515398715bc582ed7d588d19103a5fc168 SHA-256: bb140b07a0460a9e4cbf1f036042e428b71e1d599288143e2795678f69c7488c
162 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous links pointing to compromised websites, indicating an attempt to redirect users to malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The ML classifier also flagged the PDF as malicious. The presence of embedded JavaScript suggests it may be used to exploit vulnerabilities or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5238

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.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138f819dceb8---gubesixalupuruwineru.pdf In PDF document text
    • https://valstybestarnyba.com/upckfinder/files/50686986685.pdfIn PDF document text
    • http://stilistspb.online/public/files/uploads/files/wopejisesodoxotivixogetal.pdfIn PDF document text
    • http://yljczl.com/uploadfile/20210910153838501.pdfIn PDF document text
    • http://studiorestagno.eu/userfiles/files/55052623896.pdfIn PDF document text
    • http://naszymsladem.pl/upload/file/nodetipi.pdfIn PDF document text
    • https://orderpoet.com/ckfinder/userfiles/files/77025788199.pdfIn PDF document text
    • https://uudanbury.life/files/file/vomibavofotavazafodabo.pdfIn PDF document text
    • http://mikomisushiwc.com/uploads/files/sonolibugubixozogunezo.pdfIn PDF document text
    • http://langmoon.jp/js/upload/files/56474581474.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16143026880597---nirijetet.pdfIn PDF document text
    • https://maintogelonline2.org/contents/files/21874670306.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/8a82e7f72f47ba64ccc1ae5f4d0c0e49/bumorefuligokap.pdfIn PDF document text
    • http://rideabikenews.com/user_img/files/25431307094.pdfIn PDF document text
    • http://www.mbk-montage.nl/ckfinder/userfiles/files/77075553479.pdfIn PDF document text
    • http://xn----ftbkdcamitb5h.xn--p1acf/files/fck/file/zurajilebuk.pdfIn PDF document text
    • https://mr-alian.com/upload/ckfinder/files/89406002322.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161373c0126298---makunidudetupupekezuni.pdfIn PDF document text
    • http://floramarble.com/uploads/56112219230.pdfIn PDF document text
    • http://hodori247.com/uploads/files/52478755923.pdfIn PDF document text
    • http://vinacafe-dalat.com/Images_upload/files/dijoz.pdfIn PDF document text
    • https://www.antoniopopolizio.it/ckfinder/userfiles/files/26017168164.pdfIn PDF document text
    • https://mogilew.ru/userfiles/file/jawewusepatifujidovug.pdfIn PDF document text
    • http://poexali.org/static/image/_u/system/files/diniduvarojusi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=deku+in+season+5PDF link annotation

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