Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0034fd0b22995ff…

MALICIOUS

PDF

83.2 KB Created: 2021-07-29 23:55:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 57129901239ddb259562cb5ae1707623 SHA-1: 8323c32959cc70a30d07b59656ffa7ef9c5f5c2d SHA-256: d0034fd0b22995ff68bf1f04fd1b82a4fb2e116eb452a7d4df0b8c80e3dca12f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the overall structure point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7974

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=is+windows+defender+actually+any+good PDF link annotation
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/lnrq7g4k0e7tlnrsr4kkbhn34j/37994399268.pdfIn PDF document text
    • https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/7bff92501c378a857dedc422ba5728e0/luvegalo.pdfIn PDF document text
    • http://alexandraharris.com/clients/36054/File/vafarimelunigojadewiza.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec0bf24ff2---62339595179.pdfIn PDF document text
    • http://k-yoga.org/file_upload/spaw_upload/file/20210504211816.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/03831ddbb5867135c53a3309be800719/vimemagilozijujegulezowe.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16091903876541---73251085159.pdfIn PDF document text
    • https://shidoremicrosys.com/media/29097603356.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a7222b8a281---94589459126.pdfIn PDF document text
    • http://erisalaw-chicago.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/girefuni.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b65fe1e899b---9540287522.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16085b56308ba6---vejumoxoduku.pdfIn PDF document text
    • https://szekszardportal.hu/userfiles/file/lovijokajaz.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d307f76e26---11137752371.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/3c310e4704d5bed357bfb1b71124aef4/32995512360.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/rewuxanodaninobun.pdfIn PDF document text
    • http://darienhigh69.com/clients/866565/File/xepezoxivanaw.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c1ace4a8807---11545218073.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16098919b59303---5598527265.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/a9ea7533012d587654809144c955869e/31153685656.pdfIn PDF document text
    • http://www.peretprod.ro/content-images/file/tosubegegejajowofo.pdfIn PDF document text
    • http://prattsofdouds.com/clients/d/d8/d85aab9f4bcbae69c8358f7a9990a0b1/File/gibezamodafuj.pdfIn PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/5f0edae5fecb8635de56dd7e7f2eef01/69655351861.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160898f05b71a5---bivamufonutarum.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_off0000fb6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6A 10900 bytes
SHA-256: 8c15d86e940b31cf395a145b05cdf4c5fdbdfbb642b836c98dfe3a4bb73b2d01
font_01_sfnt_off000114a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114A2 17268 bytes
SHA-256: f9cb96c6ba448c1d7532e79603027a85515b6eeb16cda05a4a9fbfa99e3e51d5