Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb0392bff7f5f21…

MALICIOUS

PDF

85.5 KB Created: 2021-06-27 05:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9920c17f0a8dba800ff551a756b3ba6a SHA-1: 222aa34108b739a45800ef5f38818f7aa02d3c17 SHA-256: 2eb0392bff7f5f21b7ebefb83e63ab188cfd072658b3745c55aa17ef02255af1
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, indicating an attempt to execute malicious code. It also features a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to malicious sites for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dcf612880b---64724560448.pdf
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/da3a80310d9be03b79999a8cf0165564/mubevovatok.pdf
    • http://painttechvina.com/webroot/img/files/16998657504.pdf
    • http://apricomm.com/userData/board/file/bomegavukeni.pdf
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16083edea063c4---52684917211.pdf
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a2882d101de---35066987730.pdf
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607718a6494ed---fezabuxodonubet.pdf
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/9llifofq5ahgt571mlsns5vrvl/56568193494.pdf
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/agioh2ii7a6d13h6amr2a4v5p2/rivisutarilog.pdf
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1f4deb0bbb---14826240826.pdf
    • http://degrossier.nl/uploads/file/59421925945.pdf
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160744a2d5a5ed---wogewapopexixizuxokosi.pdf
    • http://biemmecommerciale.eu/userfiles/files/lidafotubidux.pdf
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/ca591b003a6f0736b1d309fb0fd9e0d2/woduwu.pdf
    • http://caramelitos.sk/files/84277773227.pdf
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c98ad8d860---paxusegovivodorogituwixe.pdf
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/85l5t165oshj5ughpjj09b8n6d/24891166732.pdf
    • http://maduraicaterers.com/app/webroot/js/ckfinder/userfiles/files/kokebajalalolifebulinaw.pdf
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/g17a1grgmudk1vq3qsou38s042/gijewikiwiveguko.pdf
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608b4021f3355---68129616770.pdf
    • http://zxpgw.com/userfiles/file/pakupizarapakevo.pdf
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/e3b164715df68686e9087e5dbf65b5e2/gaganudipokirewusototuxik.pdf
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16079c5fa025ae---kiwek.pdf
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/579904237100c1d7f69eb78ddce24f44/88696452920.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=notice+of+intent+to+vacate+template
    • 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_off0000eabc.bin
18f2422dcee6f2c7a746deb7382de065dcf43bd38ec348fe140178e8262388fd
pdf-font-stream PDF embedded font (sfnt) at offset 0xEABC 17552 bytes
font_01_sfnt_off000118d5.bin
39a85114ec527af00294b4df82550e87695e1bce34af0c23e0cb7c5cd1c373f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x118D5 10416 bytes
font_02_sfnt_off00013073.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13073 16792 bytes