PDF malware analysis — malicious · 5657b34c4e78c12e

MALICIOUS

PDF

70.3 KB Created: 2021-09-05 20:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: eae4471206e0651ab349b8ec5bb47a9a SHA-1: f84ceb43938d1dc6adfec08af3f9fd9b6a4ce393 SHA-256: 5657b34c4e78c12e33c689e074bc7354abd5feb311ac9750477ce87d22662b95

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, containing numerous embedded URLs that point to compromised websites, likely to lure users into phishing scams or download further malware. The presence of these links and the compromised CMS upload storage heuristic strongly suggest a malicious distribution or phishing campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.7099

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 https://ketchas.ru/uplcv?utm_term=dementia+pdf+2017 PDF link annotation
- https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/6104fc8b8c761479f6afcb9315d0c922/sudemomafixelaraxoze.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d4d0145fbc---95188783196.pdfIn PDF document text
- https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/a653k556emrqn596hmk3ilkovp/fenufobowekotiron.pdfIn PDF document text
- https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608f850a5bca2---98173664047.pdfIn PDF document text
- https://noihoithanhtuan.com/media/ftp/file/kajezumumutonag.pdfIn PDF document text
- http://vandervalk.reviews/app/webroot/files/userfiles/files/nusikezufipa.pdfIn PDF document text
- http://sportsgarten.com/editorData/file/wobevumotemuleni.pdfIn PDF document text
- http://viprealestatebrokers.com/userfiles/files/91188496294.pdfIn PDF document text
- http://big-blue-bus.com/pics/fotos/1/file/jufazobaziwifojexa.pdfIn PDF document text
- https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/b9d1929ed63e90bc8bf5fdd99985b8cf/19205110880.pdfIn PDF document text
- http://villa-carlshorst.de/sites/default/files/file/77357640582.pdfIn PDF document text
- https://ortechindustries.ca/ci/userfiles/files/taxisejusejov.pdfIn PDF document text
- https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16086078d8a0f5---72553014076.pdfIn PDF document text
- https://thesaddlebank.com/wp-content/plugins/super-forms/uploads/php/files/v2gtnile3f3cobus8vjeu54g1e/3617075820.pdfIn PDF document text
- http://orem.mn/uploads/files/72055813469.pdfIn PDF document text
- https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/9db848fbf2638efb77905c187637f07f/rabibodogeje.pdfIn PDF document text
- https://bwawarszawa.pl/upload/file/zimozokivimapimunapewa.pdfIn PDF document text
- https://doellefjelde-mussemarked.dk/images/newsmail/file/38961913640.pdfIn PDF document text
- http://sushrutproctology.org/ckfinder/userfiles/files/zaxawuwinus.pdfIn PDF document text
- https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbeabb3e3be---40086477140.pdfIn PDF document text
- https://delaneyllc.com/ckfinder/userfiles/files/98064244322.pdfIn PDF document text
- https://pet-fashion.ro/mm/file/2332022937.pdfIn PDF document text
- https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/20adcd477200454515dbcdff4b690590/28247353447.pdfIn PDF document text
- 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000eaae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEAAE	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000102c5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x102C5	10572 bytes
SHA-256: `91b51ae81734062dab05c622686fe9c6053b45a9389dcee7cb35186833db8566`

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