Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2584fbc1871870…

MALICIOUS

PDF

87.3 KB Created: 2021-07-19 06:16:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 482a64dc5d2d55bd17270ea8658951e2 SHA-1: 608bfdbe0048855ff801968c2b6f7e886ccbbf30 SHA-256: 1e2584fbc18718707a9e841c5b8ac1e3005d6ab272cdc38c4d8288b2a9db3971
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting. These links likely serve as lures for phishing attacks or to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6426

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://giorgiosantinelli.it/file/makuwobopexitulo.pdf In PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/5va42sgfvh544h4msg18kktst1/gagajakuzigakosorag.pdfIn PDF document text
    • https://drivetripper.com/userfiles2020/files/xiwavoje.pdfIn PDF document text
    • http://chataphan.com/file_media/file_image/file/gopibenufi.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160e4eca038a16---watofelopekogoraborawer.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/2620v2e7ot6g2bhrsevcdu38s4/34762262815.pdfIn PDF document text
    • http://assushop.com/userfiles/assushop.com/file/povodaxelojana.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072c6bd72042---nepopejugososerefotisu.pdfIn PDF document text
    • https://qnzar.com/files/56647497114.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/f2ba10faae51f25c9c25421bf466a8e9/lexebuxineri.pdfIn PDF document text
    • http://turagent007.ru/userfiles/file/pisisegolikuxizoje.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/da7477e7773d5b9a477462958c64640b/1287992511.pdfIn PDF document text
    • http://conblocmanado.com/pics/file/ramusorufuzopexi.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c758b268bb---67775332648.pdfIn PDF document text
    • http://portalcom-b2b.es/img/user///file/_0766041001620317030.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160973cf1c81a1---toxodifudubonabemugu.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16087907b119d0---banuxisufi.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075c7068a6a7---jibusakomisixafezosewab.pdfIn PDF document text
    • http://abnicum.ru/files/file/laleku.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d23b87908d---5482535427.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/0551d5c580a5790c95b616ab0516012b/zesijevomajawefamonigalak.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f7045aae44---mejiv.pdfIn PDF document text
    • http://dbjhockeytournament.com/clients/f/f9/f9ff496842c877cbb4522510b668f2a2/File/sesedikewirojixe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=loss+of+ability+to+swallow+is+calledPDF 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_off00014066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14066 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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