Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1051d5effb0353f…

MALICIOUS

PDF

134.9 KB Created: 2021-06-20 08:53:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 255d9acd85a96be28507b2c724ffb6b0 SHA-1: f9d814555c35b44c7c12b49fe316a3ec5cb7a78f SHA-256: e1051d5effb0353f31d9c77427194f4400ef80a1b11d5c99dd438b8d2b3ccee6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document functions as a link farm, directing users to numerous compromised WordPress upload directories and disposable hosting sites. While no scripts were explicitly extracted, the nature of the link farm suggests an intent to deliver phishing content or further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9268

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://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2475c8d44---tokusasexusaz.pdf In PDF document text
    • http://france-ex.com/images/blog//file/86835003877.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/o3q33l3djm0k2n83q0tesnrd4s/92634092284.pdfIn PDF document text
    • https://weilaimachinery.com/userfiles/files/76934065191.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a92696b499---3886452206.pdfIn PDF document text
    • http://sbs-group.co/userfiles/files/korolazejaxe.pdfIn PDF document text
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/9151faee163c361987c445e1713398c3/tulaberex.pdfIn PDF document text
    • https://www.analfissur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607441db54237---31381456468.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160730e8c10a0d---gotarutoketubelezilaxomif.pdfIn PDF document text
    • http://aire-limpio.com/img/editor/file/zumemotizemukativir.pdfIn PDF document text
    • https://ikitellirezistans.com/upload/files/94434304128.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/125fc9994d16adf1b534757d678030ae/77802470448.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/16083248aab37b---joxoriv.pdfIn PDF document text
    • http://domeinbeverdonk.be/assets/files/file/63587810927.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ba686f85f---3273126500.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606cad97ea2af---70403342024.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/a70963a2bda35e425cc2aaad7f0e30ab/65355896251.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=deku+meaning+in+englishPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18506 33148 bytes
SHA-256: 7e18ed114fa82a16a3c136864ed2107a16b137e7525ed063b2cd1bd132b90127
font_01_sfnt_off0001ecd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ECD5 5064 bytes
SHA-256: bb3a29b71a31365d526bf2a8a964f6a775a435bfb30707cd7342a48c780c4385
font_02_sfnt_off0001fdf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FDF0 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280

Open this report in the interactive analyzer, or submit your own file for analysis.