Malicious PDF — malware analysis report

Static analysis result for SHA-256 05e4ee41f25ef2d7…

MALICIOUS

PDF

79.0 KB Created: 2021-07-07 13:46:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: a223c9dd263e826c7c852a3f762a2159 SHA-1: 3e08bd9a33ba1db54cfeb61bc1acad5c15960349 SHA-256: 05e4ee41f25ef2d7e20385bd2f27ae81e33d54037cef7c2b9f65a9bda3d1e1a3
124 Risk Score

Malware Insights

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

This PDF file was detected as a phishing trojan by ClamAV. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites. These sites, in turn, host further PDF files, suggesting a multi-stage download or redirection scheme designed to lead the user to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2676

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://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607de8643e792---nuwikumobawosidokix.pdf In PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/t3p4km4fvm8vhrqk3uo11ppuh7/dorofixodubafevovafe.pdfIn PDF document text
    • http://urbanconstructions.org/images/uploadedimages/file/wilalolopujoxa.pdfIn PDF document text
    • http://westmoorclassof1965.com/clients/5/52/52ec68f2b927accf75267cb07bfcc891/File/biditudefawok.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/i826m20mvrh92mkq021rdr7uu5/farilubotafezixun.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b853c42645d---zasiginarag.pdfIn PDF document text
    • http://jtour.vn/userfiles/file/nejesefiwexofesamat.pdfIn PDF document text
    • http://fd-health.com/upload/ckeditor/files/fimojetobagulumujigomow.pdfIn PDF document text
    • http://hotararicedo.ro/files/files/jirunowabe.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/a7f5784cab3fd97c30887ada73a1e1e1/wosigotisoxagojit.pdfIn PDF document text
    • http://bogieclassof67.com/clients/71235/File/13362643644.pdfIn PDF document text
    • http://albino-pitti.com/pub_img/file/kotonixedelidikujib.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a1c7e2aca8---21609911076.pdfIn PDF document text
    • http://sjhrz.com/images/upload/File/41429427224.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608858c0bf743---wowuwatadejovotu.pdfIn PDF document text
    • https://cubic.is/userfiles/file/75571605787.pdfIn PDF document text
    • https://florerialafloresta.com/ckfinder/userfiles/files/75281492297.pdfIn PDF document text
    • https://hantverksakuten.se/ckfinder/userfiles/files/bowewabisiw.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/0nea3tphhn6i9ancaihv35tuj3/xarope.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/e9a14f7d3e36fa28d14ef9a45b2bb4db/dewuxexetubej.pdfIn PDF document text
    • http://wintec-samu.hu/uploads/files/nawubigalikuxagonuva.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16074ae14642dd---safasak.pdfIn PDF document text
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/j1u0pg0faa70ba2jkbtjk5gs88s1amqv/sefidodewok.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/f0f8d2e1f9b424621282a8514d7673df/koxedawebupoxa.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/8fd65bf2129dc09fca9b4d2e430764b8/pemawexovo.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b248449d584---39885875255.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=notes+for+chapter+1+physics+class+12PDF 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_off0000f424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF424 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010c3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3B 10736 bytes
SHA-256: 9cbb0d2126b758c4bd837e62f30efdf60caa49099faf9a93644617a1fd5c166f