Malicious PDF — malware analysis report

Static analysis result for SHA-256 9387d8c3eb6b7f1f…

MALICIOUS

PDF

93.9 KB Created: 2021-07-13 22:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9829ec8d4d4357a22277c0a94de2e0f7 SHA-1: b7b3d92ff7b1df2f210ef23645f05a82efe6b121 SHA-256: 9387d8c3eb6b7f1f2df7046e06e4f5bf6a082bcca68a2220600ddf76eebafc64
212 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of an advance-fee scam lure. It contains numerous external links, including one pointing to a compromised WordPress upload directory, and embedded JavaScript, suggesting it is designed to redirect users to malicious sites or download further payloads. The presence of embedded JavaScript indicates potential for client-side exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://queure.ru/uplcv?utm_term=fort+benning+hospital+appointment+line
    • http://funperm.ru/content/file/7116954313.pdf
    • http://mspchicagolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nuparotu.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b5e0469a8a---jopavuzomiluw.pdf
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607d522362dd9---kujopegamoreninogo.pdf
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/67458952f6f0feaff9f72ddce5137350/zipelad.pdf
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/om7edjqbfvid14f7jaqk5h5pcg/85684310197.pdf
    • https://didacostruzioni.it/userfiles/file/pebumebew.pdf
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c977e0408f---zuleredelizedodubavafud.pdf
    • https://handientu.vn/userfiles/file/47761194713.pdf
    • https://alnahamgroup.com/userfiles/file/64060082460.pdf
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/98p9sbgarcq3a70dp9i33426os/tezani.pdf
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607fcceea300e---wesutif.pdf
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160905d52e6b28---49161729565.pdf
    • http://gmicropilotes.com/uploads/files/54626619771.pdf
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d224a2a3da7---fajuvitoduxabobefoxume.pdf
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/577s818poubv6lnqj9geja7729/kogomoxasora.pdf
    • http://huiking.cn/uploads/file/130451474651.pdf
    • http://sarlampa.ru/upload_picture/67442375701.pdf
    • http://shopsuathientu.com/uploads/userfiles/file/tamenofumuboxulabemafiwar.pdf
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/mkg71i62avj4ff199djr16o391/larunixudosexirusirepix.pdf
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/b6939333135deadeec79520e2cfca514/4259118552.pdf
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/8tvqal1kfgfrg4teko2tl2k326/xegupifokuwejodamesejom.pdf
    • https://appfacile.it/file/60011478328.pdf
    • https://konferencii.ru/js/ckfinder/userfiles/files/diwezid.pdf
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608f08f4795f0---82979225624.pdf
    • 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_off00010b35.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B35 16792 bytes
font_01_sfnt_off0001234c.bin
c87b2678ae1f75018d43b088d1ef54cf67acedd4592479a45a3a14d7f2dcc9c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1234C 10816 bytes
font_02_sfnt_off00013bc3.bin
4bb9b0c6c8a64f58aee84e4eef4e52b1702539548512d8bb649704d52c1ee2d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13BC3 17628 bytes

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