Malicious PDF — malware analysis report

Static analysis result for SHA-256 64205c1ed6c04ed9…

MALICIOUS

PDF

109.1 KB Created: 2021-07-19 22:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 0885302f12ca14fabd767f53624d9214 SHA-1: 5290131828d54e13918678a5ff25a93da9225e2f SHA-256: 64205c1ed6c04ed97873363ee4b98f848c26d13ce18b4adc9e9af8fdf6ed6787
124 Risk Score

Malware Insights

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

The PDF file contains a link farm with numerous URLs pointing to compromised websites and disposable domains, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics. The ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' further suggests a malicious intent, likely phishing or malware distribution through these links. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4483

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 http://midel.me/userfiles/file/megitadasasuvo.pdf In PDF document text
    • http://www.haztartasigepszakuzlet.hu/pics/file/wotidomakaxupe.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b5b27388164---7632707520.pdfIn PDF document text
    • http://ngnjl.com/userfiles/files/71707538476.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/9f92a4bb04642da04e391c1457e8738e/galofilurobu.pdfIn PDF document text
    • http://veoguidecostarica.com/ci/userfiles/files/2521811822.pdfIn PDF document text
    • http://pastoret.it/userfiles/files/48320600490.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/df96dd65d106f3c619fe25cc02f27a16/67228228267.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bf95dbbb34c---rutamerabejoxudoxogored.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/s9e1gs3o9ooo13keeqd9bb2s8e/60587349865.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085615fc01d3---72642112676.pdfIn PDF document text
    • http://domholidays.com/userfiles/file/tuzetewakujegem.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/kipetogadop.pdfIn PDF document text
    • http://3dprofi.net/images/uploads/file/81943005513.pdfIn PDF document text
    • http://verduciautodemolizioni.it/userfiles/file/wenoxugewuvigalam.pdfIn PDF document text
    • https://thinkhigh-tech.com/d/files/xudekipumanep.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160787d16223f0---bojodemifagixujajal.pdfIn PDF document text
    • https://fotofidelity.cz/userfiles/file/xosubofilopivadabor.pdfIn PDF document text
    • https://study4student.com/cache/fck_files/file/85185677939.pdfIn PDF document text
    • http://seanmore.com/userData/board/file/vafolifemosakepelaw.pdfIn PDF document text
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/662b97850c801a11d8d49f83e4bf9bea/54360126871.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160efe84b1fcc1---24439677191.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=mario+odyssey+diddy+kong+outfitPDF link annotation
    • 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_off00015663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15663 20620 bytes
SHA-256: d33efa7d56533f34eec5dfd70c38532a0a7522480323a3d603b5385dae1877fc
font_01_sfnt_off00018a8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A8C 10780 bytes
SHA-256: 5860c9617d253a129873e7d8d18d6334d2d67ac7b56a690940f811a44a28a240

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