Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8bb0cece2f69b9b…

MALICIOUS

PDF

70.7 KB Created: 2021-09-03 03:07:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 2bf4e755815d2dc14d9de5a7e70f0dfa SHA-1: 67af4d7c0707c854039c7a7cbd1b285171497ead SHA-256: e8bb0cece2f69b9bb419678ec0e1bc1fec74ba0b0323178d8e7505a8c7315183
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. It contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to distribute further malicious content or phish users. The presence of embedded URLs and the nature of the link farm indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8398

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://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/bbca50a0aa58e08ecb4dbf6b42d863ac/34924081818.pdf In PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160cd866ccb01b---wezelo.pdfIn PDF document text
    • http://buergerforum-tirol.at/file/jonijonodeteva.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607231c2122ce---99774153210.pdfIn PDF document text
    • https://ekransamara.ru/files/40239497550.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/160eda21489780---25733264332.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/161174c8c4c103---femewososakuzona.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aeacfb7e1b3---pejixis.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16104fce885114---14767556769.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc442973475---jafuxumavonudoraf.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d41a0ada3e7---norexubarijumewazivobipiz.pdfIn PDF document text
    • http://challendor.com/fckeditor/upload/file/24809677571.pdfIn PDF document text
    • http://verduciautodemolizioni.it/userfiles/file/11206075803.pdfIn PDF document text
    • http://farmaciafasolis.eu/userfiles/files/63262615252.pdfIn PDF document text
    • http://flemingdecal.com/uploads/assets/file/besefogu.pdfIn PDF document text
    • http://klimagra.pl/images/wysiwyg_img/file/74679929582.pdfIn PDF document text
    • http://almar-bus.pl/userfiles/file/50929183810.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16096c82be66e4---3818678592.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/550af108774f877c908190fc7d04acd5/jotuwavama.pdfIn PDF document text
    • https://dailyhondaotomientay.com/upload/files/30853220486.pdfIn PDF document text
    • http://jucal.es/images/file/fufebogusazujif.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160861e33a9ab0---68919405729.pdfIn PDF document text
    • http://cyclad.org/UserFiles/file/29612920166.pdfIn PDF document text
    • http://gojjang.com/uploads/files/97096527188.pdfIn PDF document text
    • http://carsongrad75.com/clients/3/35/35717660c32d3dd9b0ffde8f33a19d23/File/1523402346.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/99548853543.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=hungarian+dance+5+piano+pdfPDF 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_off0000df88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF88 19480 bytes
SHA-256: 5aaa95b85e10581c6053875bd226189a43b7ab612552dc3b2a3267cb50b98022

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