Malicious PDF — malware analysis report

Static analysis result for SHA-256 d970b94c61fde4f5…

MALICIOUS

PDF

87.4 KB Created: 2021-09-23 11:18:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: d27c3bc1b5e69bbee6b94f64fdf7fe01 SHA-1: d174716cbd02b8aebef32563d6e22f38fb5eea76 SHA-256: d970b94c61fde4f5d92938d79238bf7d75eca78f2cff80d540c1138b33bba2ff
124 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to lure users to potentially malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The file's purpose appears to be directing users to external resources, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier clean score 0.1482

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://huntic.ru/uplcv?utm_term=bring+it+on+again+123movies PDF link annotation
    • http://mygotour.com/FileData/ckfinder/files/20210903_E024136AABF5F36E.pdfIn PDF document text
    • http://kaies.net/upfiles/file/16154500636.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/a30872a71686b0fb312e1ca91bca9e71/sovara.pdfIn PDF document text
    • https://ontech.vn/images/ckeditor/files/fegojap.pdfIn PDF document text
    • http://sk4education.com/ckfinder/userfiles/files/55635090095.pdfIn PDF document text
    • http://lamekatus.ee/uploads/ckeditor/files/kexufi.pdfIn PDF document text
    • http://chuanghuilaw.com/filespath/files/20210906040448.pdfIn PDF document text
    • http://tecsun-moscow.ru/docs/file/filejosapalobuwolipu.pdfIn PDF document text
    • https://echipamente-scule.ro/userfiles/file/27157051367.pdfIn PDF document text
    • http://zdrowejaja.com/Upload/file/21815842855.pdfIn PDF document text
    • http://namhungholdings.com/uploads/ckfinder/files/86671029550.pdfIn PDF document text
    • http://baove24h.org/upload/files/turikonofanujefevumik.pdfIn PDF document text
    • http://siddharpeedam.org/userfiles/file/In PDF document text
    • http://lamekatus.ee/uploads/ckeditor/files/xitigozekatitugefiba.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/toposufiluf.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613ece857a587---25927477120.pdfIn PDF document text
    • http://megalaserasia.com/upload///67304769456.pdfIn PDF document text
    • http://xn--9i1b14lwsg1seumdzsx.com/upload/fckeditor/file/bexuma.pdfIn PDF document text
    • https://y3stwk65l-mn9.com/contents/files/33664835498.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/2e4fc95d5d88e55623dde10c19ea0ba2/39846790141.pdfIn PDF document text
    • http://ottomaniantextile.com/userfiles/file/gitepirubopulagago.pdfIn PDF document text
    • https://verner.lt/images/files/89142421728.pdfIn PDF document text
    • http://www.leasebridge.com/CKUPimg/files/77234771328.pdfIn PDF document text
    • http://cuboni.com/uploadfile/hong202109131032458478.pdfIn PDF document text
    • https://sukienmiennam.com/userupload/files/zazuwimixebukupivipemog.pdfIn PDF document text
    • http://abwmountvernon.com/uploads/files/86881640761.pdfIn PDF document text
    • https://fundacjaartfreeart.pl/userfiles/file/92086117931.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C32 19344 bytes
SHA-256: aab224d1314d734a1927e2578c4607cb1349f9ed653ac61e44b5e4f91a36ff04
font_01_sfnt_off00013f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F02 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1