Malicious PDF — malware analysis report

Static analysis result for SHA-256 27be994a88192344…

MALICIOUS

PDF

74.8 KB Created: 2021-07-14 01:58:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 29b4377f26c94bf5e8f1718f77189757 SHA-1: 104c4e1ba9d6f0ab726cc276377ebf5011d8ad98 SHA-256: 27be994a88192344893a494f0ff4fc3ec2acea57117d617cbff48ce10898b028
64 Risk Score

Malware Insights

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

This PDF document was flagged as malicious. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

Heuristics 4

  • 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://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/f4e8e6213ab8cfe8e4ac3b74fb605729/miberitalamesuniruzelug.pdf In PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078091b32439---biwevat.pdfIn PDF document text
    • http://m2mus.pro/clients/b/b1/b1ca46fdb12d68e762e4a8b3318caec0/File/95015350519.pdfIn PDF document text
    • http://arunimaflavours.com/userfiles/file/96795036512.pdfIn PDF document text
    • http://cambresisemploi.fr/ckfinder/userfiles/files/46989999095.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/fd5e51269c480fb8865e1811d273e425/lefodanajakozi.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160cd7f241e2b1---33028058675.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/gozewenajulototu.pdfIn PDF document text
    • https://apoiotelecom.com/imagens/img_fckeditor/file/rolutukebav.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0470389eb---68904918522.pdfIn PDF document text
    • https://sardavetri.it/userfiles/file/5223834945.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ded06de3861---24039730164.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1b039cae40---76660517443.pdfIn PDF document text
    • http://studioingegneriavaragnolo.com/userfiles/files/fubogabo.pdfIn PDF document text
    • https://autoteam.in/ckfinder/userfiles/files/xezexu.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/kf9me8bqi0j3bgmjdqn2075nh4/rebezisexebafiv.pdfIn PDF document text
    • http://alacarte-design.de/userfiles/file/gufuruserenosor.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/1u7m524e4oesa3a0uvsb19vn33/5756267023.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f724f04175---xolomivavabapoxoz.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/ac78dfa0b8906140156563b5e8ea70fd/28985027243.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/16ab1e6a7c613d7b41c0798e3c683b43/sorewenewovejesezimagufu.pdfIn PDF document text
    • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/f292cf242d8f653883d30c3f133bba6e/tasebadozoxejigikapanaves.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=what+is+a+cell+answerPDF link annotation
    • http://s292376414.onlinehome.fr/datas/imgmail/file/fupumevunejasorawidojum.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_off0000e50b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD1D 17356 bytes
SHA-256: db2e6a8414a6ede9df3f59df59935d5b334c644477638ba32fd0230001c0848b

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