MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier. A critical heuristic indicates a lure for clipboard command execution, suggesting the document instructs users to paste commands into a shell. Multiple URLs point to compromised WordPress sites and potentially disposable hosting, indicating a distribution mechanism for malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LUREDocument tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://infrive.ru/uplcv?utm_term=launcher+2021+android
- https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/8c7a6d17857b34a5fc34f5a053d001bd/dakabefenabojeluta.pdf
- http://vanlysecurity.vn/vanly/album/files/pefasenefud.pdf
- https://novahealthclinic.ca/userfiles/file/xozogumatitelobumaron.pdf
- http://ttccid.com/userfiles/file/degidigexojaxobeg.pdf
- https://schmitz.cz/res/file/26388433269.pdf
- https://ecohort.com/userfiles/files/94819534376.pdf
- https://manorhair.com/uploads/files/202109090151365317.pdf
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/161381734cc128---55481584369.pdf
- http://jplus-ag.com/upload/files/BodyFile__613A05141726D.pdf
- https://eledigitalpr.it/allegati/file/mividokodoserozaroxuji.pdf
- http://one9five.com/userfiles/files/90321456373.pdf
- https://www.xtremefitness.com.au/application/third_party/ckfinder/userfiles/files/raguxonem.pdf
- https://sunarchegypt.com/userfiles/file/wezigafukore.pdf
- http://df-2.de/images/daten/file/10753848605.pdf
- https://kisikana.hr/UserFiles/files/jefazofeku.pdf
- http://postelezmasivu-brno.com/ckfinder/userfiles/files/wusemezifutis.pdf
- http://tajilin.com/upload/files/golezijodera.pdf
- http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144aee046c19---kokij.pdf
- https://jagominum.com/contents/files/42820821555.pdf
- http://onnetsolution.in/userfiles/file/fipaba.pdf
- http://sintellect.ru/Repository/file/nenanitativegusewo.pdf
- https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/l935r2d7o37vuj8kg186a738e7/notavutojokifulobowu.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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e822.bin4c680887afea0a43be52465ed6168c865413c7000efb3ebfda2db0964e46ec13 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE822 | 10508 bytes |
font_01_sfnt_off0000fffe.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFFE | 16792 bytes |
font_02_sfnt_off00011810.binb536f217ca27fc04c8dbbc8e16fb466aa5b20f9c1e67750cc32b76f528ad4a7a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11810 | 18144 bytes |
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