Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f9a74e2305eeda…

MALICIOUS

PDF

102.1 KB Created: 2021-07-17 08:01:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b2f7d33ab6f5f21c5ae6cc40c719d340 SHA-1: e61821eca9ffd1e0de8c6c5e52db3133dc578a43 SHA-256: 96f9a74e2305eedab63c08fc3305ee1ee83c989e0e67b5efb63ecb7c1211aae5
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a phishing or trojan-like behavior. It functions as a link farm, directing users to various websites, some of which are hosted on compromised CMS uploads or disposable hosting. The presence of numerous external URIs and link farm heuristics strongly suggests an attempt to lure users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/4fe42f84cd195d42802247a2a6347487/jelopofilazokukoxu.pdf
    • http://xoblates.com/clients/e/e0/e08cfb93fb97b00c28394d0532709dc9/File/67739114820.pdf
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/2788f23356a11e2dfe448b162a75ff80/31643691495.pdf
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160adad604f190---28243613430.pdf
    • http://ndt-tl.ru/upload/file/42373465642.pdf
    • https://sportcity.bg/webroot/img/content/files/suxarivetisabakolikimowa.pdf
    • http://imhome-listings.com/userfiles/files/12552790700.pdf
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a27ddb757---sagiluvison.pdf
    • https://giverny-bkk.com/upload/files/31231737892.pdf
    • https://majubesar.com/contents//files/59536029422.pdf
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/1dfu7oacfrdrdmq01mdm4h2k37/sebemim.pdf
    • http://baraanduliaptti.org/userfiles/file/29527805166.pdf
    • http://anatolianlgs.com/userfiles/file/71071336922.pdf
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/4i1nq1mpu8vvjg2epgpvh820h0/87155805596.pdf
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1b9256fb4832e7ef6b9f2110a117ec53/22064729921.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607d40872ef50---wuvobuvetopufuki.pdf
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb7c2741a4---59979493278.pdf
    • http://eska-lift.ru/userfiles/file/5508824671.pdf
    • http://www.allatpatikapecs.hu/images/file/20789338707.pdf
    • http://relocationservicesgroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fea79ac399---mufugokodojawezapowavud.pdf
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/6s0cietnp251ibk36i6u405sjr/70283949263.pdf
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160745ca68d8fd---kekakefisusatilipefav.pdf
    • http://bvmnotarissen.nl/app/webroot/files/ckeditor_files/files/91511487905.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=how+to+dream+of+someone+specific
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012ae3.bin
238ed38dc3e4dda47b98841835bb89ce2e354f4939e08ceff98b1ee21402c93a
pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE3 17836 bytes
font_01_sfnt_off000158b1.bin
ce9928291e7b5ac53827a0bd41b18301b50b983b3e29b3b3a1165c4df2c241fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x158B1 10812 bytes
font_02_sfnt_off000171a3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x171A3 16792 bytes