Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee2ccba5503f80a…

MALICIOUS

PDF

198.3 KB Created: 2021-07-13 02:05:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 6c7bb02202702e47567436d7199c7631 SHA-1: 084aeaceed0dde2e05cf3fe4440bdbc46aea573d SHA-256: 2ee2ccba5503f80aab7b8427773a6b507c47b1744c0a07c08d1eb41a5b1a2da7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected by ClamAV as a phishing trojan and flagged by an ML classifier. It contains multiple embedded URLs, one of which points to a compromised WordPress upload directory. The primary attack vector is likely spearphishing, with the PDF serving as an attachment to lure victims to malicious or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8931

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://yuanjen.com/ckfinder/userfiles/files/40148263492.pdf In PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/vuufgs5okrbhqduagdsjdt58i4/jewiwurupusakavasuwawa.pdfIn PDF document text
    • http://biblioteka-belzec.pl/upload/files/1861160527.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/9oehf5oijd8i0dn2d9e2f2tgc4/lawifo.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16098888089be3---19407797729.pdfIn PDF document text
    • https://bazab.ru/ckfinder/userfiles/files/72358963065.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/2ce24accd56a7d0a71f8d4f25c14395a/45433978048.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16070db4066f6a---13755826603.pdfIn PDF document text
    • https://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/0da452ad94f0157d669fd3de6ac4dcf9/javakadelitetotowid.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/6695ae60cedbee7d8a2ba819ebe3a7c5/mimubijatagamiriloxalul.pdfIn PDF document text
    • http://studiogalata.it/userfiles/files/77416852508.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/8a375920e74a2711e71b41eb44a2f46a/4141875901.pdfIn PDF document text
    • http://alisawedding.com/upload/users/files/popukabadiludibewanofibeb.pdfIn PDF document text
    • https://ropaalmayoreo.com/images/userfiles/file/6931846771.pdfIn PDF document text
    • https://taxiporec.top/wp-content/plugins/super-forms/uploads/php/files/j66kabusl2bl2m5ptao4a80u6m/sipizusizezenozuzovorulub.pdfIn PDF document text
    • http://dashoernerboot.de/userfiles/29704440258.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/batorejoritomapon.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/731ab143fc0bd9cb821b264267e342a1/5964075143.pdfIn PDF document text
    • http://truhlarstvisollner.cz/data/file/gagewow.pdfIn PDF document text
    • http://seoulgreeter.com/userData/board/file/5083313183.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/4tp7m4nftavk3091if87qsl983/rusipafilidozugisadajativ.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a3fd803a7e9---89133019476.pdfIn PDF document text
    • https://sitpchemcieszyn.pl/_sitpchem/file/piwabakefizumikowiditulep.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/7dd6d945c664e8d3b97fbe23a18a93c4/3672794136.pdfIn PDF document text
    • https://phuketwebstudio.com/ckfinder/userfiles/files/73411025394.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=harry+potter+movies+online+123PDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000289fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x289FD 19120 bytes
SHA-256: 5519ae82c54510effbf09080525e71cc036a8c44848d53a39b4501b0baa2f0ae
font_01_sfnt_off0002bc0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC0B 10928 bytes
SHA-256: 442a5ffab539d2c50516ebf32428cc7c3c37665e4a3065ec6ef3e5d6430b4cce
font_02_sfnt_off0002d56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D56D 9124 bytes
SHA-256: 8b9cc0fda0694956cad85d0c589306863fe8ffa0cce7235192aaddac4292ae77
font_03_sfnt_off0002f2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2E7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1