Malicious PDF — malware analysis report

Static analysis result for SHA-256 edaf604fd61c412a…

MALICIOUS

PDF

95.1 KB Created: 2021-07-14 05:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ea593dd6c033a17968084a3f48d24368 SHA-1: 094c7d5b1d20b8599a01800aede9ea8c2bac2804 SHA-256: edaf604fd61c412a73e0c5c7973c6e219c2a0d889a6f13e8bbbfab2625b3a29b
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 ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites, likely intended to host or redirect to malicious content. The presence of multiple distinct hosts and the use of 'utm_term' parameters suggest an attempt to obscure the true destination and potentially leverage SEO tactics for distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9806

Heuristics 6

  • 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
  • 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 http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a344704a0b7---kofaxojurexapited.pdf
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d2b7afbda---13437792920.pdf
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/hthap56q6lm08l9nrqkdl5aj66/bevakuxizuwubefexadifaw.pdf
    • https://muguet.fr/sites/default/files/file/76299216833.pdf
    • http://fitnessklub-impuls.pl/uploads/assets/file/gopefuzasepapazapotoku.pdf
    • http://jyjwqj.com/uploadfile/file///2021070106044184.pdf
    • http://bajcsidavidfoto.com/_user/file/rilefotufanekusilu.pdf
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/7b8945800306df7d1221ee582bdb4d02/sudimizipogutogawako.pdf
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160af9f346899f---98445995374.pdf
    • http://tulsacentral1963.com/clients/3/39/398188050227c7f1c8b3045a0a865105/File/82099998672.pdf
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa868d09413---15918569698.pdf
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160d7fb713c344---wulogu.pdf
    • http://creatinglifeoptions.com/userfiles/files/bedunimuxiwamexanovasutow.pdf
    • https://andymullinscommercial.com/home/andy/public_html/ckfinder/userfiles/files/62362050290.pdf
    • https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/160763b624dbfd---51015005090.pdf
    • http://www.dreamstoreonline.es/ckfinder/userfiles/files/suborebobixolupobegamomax.pdf
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/c3nkjshbqajbaameb14oplff9c/47567025534.pdf
    • http://fixmyhelicopter.com/project-new/christianbook/upload_images/file/16442817214.pdf
    • http://dok-vo.ru/userfiles/file/76188643975.pdf
    • http://canphantich.net/Images_upload/files/nowenivabedowarove.pdf
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/m65qilg1k95smncc52uegqk1ge/96060999586.pdf
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fae8a7e8c5---41263182533.pdf
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093f54dbbf52---91129554850.pdf
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160765a223348a---mebakaxomekazejejoteno.pdf
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/fdb17bfaf4bc8dd3886b11981da33bd8/79857575041.pdf
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608214582f566---tujabuxabupapapizadulonen.pdf
    • http://pc75.net/upfiles/file/1621650726.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=thrombolytic+therapy+for+mi
    • 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_off00011203.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11203 16792 bytes
font_01_sfnt_off00012a15.bin
0d244c0f05a829a08a578d5eb2ab2d362897ca309767b9e865b86b639851bd5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A15 17060 bytes
font_02_sfnt_off000156a6.bin
011ab41eaf9b362fab9a35ab71f1a61766c834b624f2af220c9a2476c09bb388		 pdf-font-stream PDF embedded font (sfnt) at offset 0x156A6 10688 bytes

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