Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a301d53912dd254…

MALICIOUS

PDF

64.8 KB Created: 2021-05-29 05:35:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6b22b1d54c75eb3f6e36e9a22856cb0f SHA-1: 1ae8a04b248e1b00d65bbc22210f33609cd6398e SHA-256: 6a301d53912dd2548d1e4b1e8de617ebd85fdb00c711e85128f137b5bf67f235
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8612

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://steakclubhn.com/campannas/file/sotosatozulodujurozop.pdf In PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/334c4491692be1daa096a484417649e6/subotenexekugopa.pdfIn PDF document text
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/28a221927bfe2f9b9aab4c7b4e849087/roxowupugapolevulok.pdfIn PDF document text
    • http://www.monts.sk/upload_images/file/2523399081.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/9d2fckecii4dsmnupq9493mr41/libepekilixemenovafoviti.pdfIn PDF document text
    • https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/fcf91efd00ef01e3bad71b9737c9dc2f/87755221285.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160803af7de9eb---sovimuwukusenetu.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f32f57c4fa---11919274818.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/01e162e054d007708a34a0a7d5304bc1/21066382338.pdfIn PDF document text
    • http://talleresjpg.es/img/file/87376220520.pdfIn PDF document text
    • http://reutlinger.pl/userfiles/file/rokefiviwijosewewov.pdfIn PDF document text
    • https://aonetreks.com/uploads/file/44079082291.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/zikewomarixewawuxuv.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/8992b420d18549b1c6f8a78ac462cfaa/zowemeligi.pdfIn PDF document text
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/f9defd5f9e8840628d902a6424ced346/6846016100.pdfIn PDF document text
    • http://atomleasing.ru/media/File/11193086709.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086d28e88954---zilodulisiveposilesibato.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/GLLx1DTH0VQ/uplcv?utm_term=to+kill+a+mockingbird+study+guide+answers+chapters+1-11PDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D0 5920 bytes
SHA-256: 127d8e2e986a2b3fe618e1c3fea574407d1463ab8b70adc4901286f6c2aaaef2
font_01_sfnt_off0000e6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E5 9552 bytes
SHA-256: 2337d93e4e672ad8f72ac19ad96a0e8613e7ed762825218ab96df5b1305ebc54

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