Malicious PDF — malware analysis report

Static analysis result for SHA-256 004b987108a77f81…

MALICIOUS

PDF

43.2 KB Created: 2021-09-23 16:54:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 15c9dfbf8b8aa6bd485deca32628cf50 SHA-1: 7f4409b54f120e5bb5918c39a89ec297e6d158e3 SHA-256: 004b987108a77f810648fb3ae799f86a519169cb1fa5bd49ac1fd8cfad18608c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links pointing to various websites, many of which appear to be hosted on compromised CMS uploads or disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6884

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 http://apsencollege.org/test/fckeditor/file/95791075631.pdf In PDF document text
    • http://biolabsrl.org/userfiles/files/mukugifinijikowuxawudixa.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1614790b1c0e08---42964725896.pdfIn PDF document text
    • https://aimtronu.org/userfiles/file/pegagugodapizazufofu.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16137642d8f3f2---50590409281.pdfIn PDF document text
    • http://eyela.kr/uploadfile/fckeditor/file/nibogijekifex.pdfIn PDF document text
    • https://coastalstudio.com/images/main/file/77854685070.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16140390711cb3---98045373942.pdfIn PDF document text
    • http://meandnetworking.com/ckfinder/userfiles/files/merowatamenakan.pdfIn PDF document text
    • https://mintowncoffee.net/uploads/images/files/kumofasuj.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130f671a3595---34176534057.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/idhbsiiqinb6ofpuc3soh62tj2/37343134324.pdfIn PDF document text
    • https://fundoohairstyles.com/hairstyler/images/file/wajuzu.pdfIn PDF document text
    • https://thanaclusterwestgate.leaddeehub.com/userfiles/files/61411586572.pdfIn PDF document text
    • http://tobn56.com/UpFiles/file/mupuxeviv.pdfIn PDF document text
    • http://alisawedding.com/upload/users/files/56883009653.pdfIn PDF document text
    • http://shamayachts.com/upload/file/valenud.pdfIn PDF document text
    • http://gzxmbx.com/uploadfile/file/2021091622480173499.pdfIn PDF document text
    • https://semot.com/Store/userfiles/file/jaxurokesopalivopafase.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614057a4f293c---bokenizepagoxovan.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/2ehm81o9gfhsa49do3861fr0ml/sekuzefebekopefonulipazo.pdfIn PDF document text
    • http://bburago.info/admin/fckeditor/userfiles/file/29809526150.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/9cb9591a67f7556de0406fb2027ff805/nudosod.pdfIn PDF document text
    • http://mos-craciun-inchiriere.ro/fckfiles/file/73095059914.pdfIn PDF document text
    • https://ip-pharma.net/data/files/vazajakararozogatewobina.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=english+grammar+worksheets+for+class+5+pdfPDF link annotation

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