Malicious PDF — malware analysis report

Static analysis result for SHA-256 642d9894180029b8…

MALICIOUS

PDF

62.6 KB Created: 2021-09-21 08:55:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 01cda24cfe2d83007088fe8be0dc3497 SHA-1: 59a78f778d969f24eb2ca123310ff56db79ed884 SHA-256: 642d9894180029b85370e41fa21473bf404df43b720b4540d36f2ad50d84bb4c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which are associated with link farms and disposable hosting, indicating a phishing or malicious download lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this pattern. Although no scripts were explicitly extracted, the presence of many external URIs and the ClamAV detection point towards malicious intent, likely to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6546

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pixomot.ru/uplcv?utm_term=the+secret+book+pdf+in+telugu+free+download PDF link annotation
    • http://domesticsolutionsagency.com/userfiles/file/34534964631.pdfIn PDF document text
    • https://ykitraders.com/UserFiles/file/pagilaned.pdfIn PDF document text
    • https://cnn-logistics.com/asset/files/zovosafagiragawa.pdfIn PDF document text
    • https://easy2ticket.com/upload/files/zakar.pdfIn PDF document text
    • http://sjar-tech.com/uploadfile/file///2021090315130191.pdfIn PDF document text
    • https://trisyscom.com/userfiles/file/20242221506.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/16137b00db9f0e---xomapulomurekanefemevitif.pdfIn PDF document text
    • https://unitedpetexpress.unitedreloth.com/ckfinder/userfiles/files/judewaxagumebezofedolamus.pdfIn PDF document text
    • http://www.colormotion.cz/UserFiles/file/59820091337.pdfIn PDF document text
    • http://sibleyestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/88777189010.pdfIn PDF document text
    • https://gospel-streams.com/asset/ckfinder/userfiles/files/94848746578.pdfIn PDF document text
    • http://nexxosrealty.com/userfiles/files/69511834377.pdfIn PDF document text
    • https://himalayanespresso.com/espresso_ckfinder/userfiles/files/gonub.pdfIn PDF document text
    • https://areopag.ru/sites/default/files/uploads/pafop.pdfIn PDF document text
    • http://kargiskola.ge/myadmin/ckeditor/ckfinder/userfiles/files/tagizaxefopipanoroxumegel.pdfIn PDF document text
    • https://floridainvestment.cz/files/file/fifotajopizemodat.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/l7uim5a2thpce46to131df9vl0/88952294938.pdfIn PDF document text
    • http://www.dfdtrading.sk/ckfinder/userfiles/files/fuvixe.pdfIn PDF document text
    • https://ms02bet.com/contents/files/jesubotixenoxatifewu.pdfIn PDF document text
    • http://berbun.com/user_img/file/24226428766.pdfIn PDF document text
    • http://lungshingcentre.com/userfiles/figiv.pdfIn PDF document text
    • http://stefanourso.com/public/userfiles/file/5899686541.pdfIn PDF document text
    • http://bielle-srl.com/userfiles/files/56281712989.pdfIn PDF document text
    • http://duepassidalcentro.it/userfiles/files/sukovosapizofiruja.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/6624676909.pdfIn PDF document text
    • http://fmmvn.net/userfiles/files/85692120073.pdfIn PDF document text
    • http://wedooverseas.com/userfiles/file/fagopegetopozolan.pdfIn PDF document text
    • 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_off0000d2d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D9 18012 bytes
SHA-256: f3e1a4f29320ae6f0499e06d9e814511affeeb57a2fada2acf62a75b361e5ff5