Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9cb5e547268aa31…

MALICIOUS

PDF

190.3 KB Created: 2021-07-22 23:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 3d9a74baf6a1fdd5e98cf6816e2e101c SHA-1: 65f13fca842199d72de1b788729b1752c766d4f2 SHA-256: e9cb5e547268aa314332e7b6d9668dc3a16b568cafb4f979e6012c1d036888ba
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 functions as a link farm, with numerous embedded URLs pointing to compromised WordPress upload directories and other disposable hosting sites, suggesting an attempt to distribute further malicious content or phish users. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9047

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://bogelaipigeon.com/upload/file/vedoremekozaramoxagitij.pdf In PDF document text
    • http://telekommarketing.com/firme_data/files/63672485668.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0b550d07a9---wenirasidavuvop.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16081de80911c1---60888164616.pdfIn PDF document text
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa0fc8a8f23---gosogowovatepogixoxa.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/68437183704.pdfIn PDF document text
    • http://southeastern61.com/clients/0/07/0748cf78e2268043913ae7c14e09e996/File/julizure.pdfIn PDF document text
    • https://eastmanllc.net/ckfinder/userfiles/files/30345563947.pdfIn PDF document text
    • https://acrgroup.nl/userfiles/file/xidujelozadoza.pdfIn PDF document text
    • https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/ukt9j35too65lcfmiipm8ch8ta/20561279358.pdfIn PDF document text
    • https://kingdomofgodmn.org/userfiles/files/44640754306.pdfIn PDF document text
    • http://www.sudaff.com/pics/file/73621735295.pdfIn PDF document text
    • http://linklandhotels.com/upfile/editor/files/bogupozekunebagokulap.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075ebb3d84b4---72106850827.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/9823633798.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a85ce00a64c---29236394961.pdfIn PDF document text
    • http://adams-gold.ru/archive/image/file/zumigizumazekade.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/76160969199.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086dc49e8ca1---33561810689.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160793910de7d2---dobizumowesuw.pdfIn PDF document text
    • https://kurtoglumob.com/upload/file/24181123950.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/am0u5cbbr0benr3pmm5uge1mfq/77981717997.pdfIn PDF document text
    • https://bednidhitraders.com/userfiles/file/moxuxemozilitinitevima.pdfIn PDF document text
    • http://paliukenas.lt/i/File/82299668235.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/9d4fc0f976d69a55b4f2497e7773beea/33227179029.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=states+age+of+consentPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002bce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCE9 10348 bytes
SHA-256: 773b3a04953df28441a3bacf93c0a08b64664d650e53d26c913fb7efb8f0e892

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