Malicious PDF — malware analysis report

Static analysis result for SHA-256 973802c3a2710a11…

MALICIOUS

PDF

52.8 KB Created: 2021-09-21 00:24:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 6a82f5162e4501d94de2fc599996d0eb SHA-1: bc4cdcf51137c45f8b22298cd559cd3a6d369d64 SHA-256: 973802c3a2710a1195f5917852ea0513d241cae88249c6e7cc6dcea949d0fe73
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised websites and disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery. No scripts were extracted, and the document body was unreadable, but the heuristic findings clearly point to a malicious link distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6586

Heuristics 5

  • 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.
  • 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://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16139874e5f42b---wexaz.pdf In PDF document text
    • https://essaidafm.com/uploads/FCK_files/file/96669556859.pdfIn PDF document text
    • http://ilkconstruction.com/Images/Media/files/69813822248.pdfIn PDF document text
    • https://brod-plovdiv.com/images/13668495814.pdfIn PDF document text
    • https://guruamardaspublicschool.com/userfiles/files/56135638049.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/74be34bd4a9cadf30c9283533f77da55/44200991426.pdfIn PDF document text
    • https://lrsinc.co/userfiles/file/pazaborelejivu.pdfIn PDF document text
    • http://matonaklawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kajejeditowaraneresasim.pdfIn PDF document text
    • http://1utilaje.ro/mm/file/39539713063.pdfIn PDF document text
    • https://albizy.com/ckfinder/userfiles/files/bobenusozamemenurevod.pdfIn PDF document text
    • http://indyskischool.com/ckfinder/userfiles/files/fatemesudemezesov.pdfIn PDF document text
    • https://zd-zeta.com/uploads/files/202109161422139890.pdfIn PDF document text
    • https://sibservis.com/ckfinder/userfiles/files/somixopafogume.pdfIn PDF document text
    • https://hattshopping.com/admin/assets/images/ckfiles/63487837487.pdfIn PDF document text
    • https://www.kuwaitpolyurethane.com/ckfinder/userfiles/files/4181172257.pdfIn PDF document text
    • http://www.almansori-ye.com/almansorifiles/files/83243197128.pdfIn PDF document text
    • http://bk-plus.at/userfiles/files/44520116692.pdfIn PDF document text
    • http://macabrey-luthier.fr/data/Files/rakoviganifagesiloxitopip.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16140dde435c84---rosudavitisotiwagiledu.pdfIn PDF document text
    • http://accapierre.it/userfiles/files/pepixukunudikawowejuxazu.pdfIn PDF document text
    • https://thaiwoodengames.com/files/upload/files/mubokaxemedid.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/58637057875.pdfIn PDF document text
    • https://www.jaegeraviation.com/ckfinder/userfiles/files/wisotogumokilewovuxibe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=made+for+you+with+love+full+movie+123moviesPDF link annotation

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