MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code or redirecting users to malicious sites. Several URLs extracted from the document point to potentially compromised WordPress upload directories, indicating a possible attempt to host or distribute further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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 http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613cdcefa3327---60867488161.pdf
- http://traktor-tv.de/sites/default/files/file/kidipibatasexutuwil.pdf
- https://afmiletisim.com/resimler/files/79544034324.pdf
- http://medwin.kr/userData/board/file/77872633506.pdf
- http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147914db2cd9---79199524566.pdf
- https://j26clean.com/upload/files/gevugerusaxubexor.pdf
- http://speed-r.com/js/upload/files/96428613477.pdf
- http://yuemeism.com/uploadfiles/files/89971990550.pdf
- http://turinimoti.com/assets/userfiles/file/malod.pdf
- http://leebyunghun.kr/new/upload/board/files/29605727683.pdf
- http://righetti-ticozzi.it/userfiles/files/45931422296.pdf
- http://npi-management.fr/ressource/site-image/files/3430017806.pdf
- http://refinerlink.com/userfiles/file/68897159380.pdf
- https://sammycar.ch/sammy/sites/default/sammyfiles/newsletterfile/61383683512.pdf
- https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/385ffc64ec5746b2c8a54070ffd1fd69/99909687396.pdf
- http://gdlejia.com/uploadfile/files/20210909_024932.pdf
- https://beauti-full.ru/uploads/files/72933108285.pdf
- http://toitureetfacade.fr/data/Files/49005394373.pdf
- https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe4ae09116---13568167335.pdf
- http://tznjl.com/userfiles/files/pexivudejopulewufupisevu.pdf
- http://parmalab.it/userfiles/files/kolotemet.pdf
- http://www.prodomasa.com/ckfinder/userfiles/files/domarerujodalujezivezodit.pdf
- https://dangeloremodeling.com/nbloom/fckuploads/file/mevukoviwepufoweza.pdf
- http://tnslib.net/userfiles/files/82836473271.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=managerial+economics+economic+tools+for+today%27s+decision+makers+7th+edition+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_off0000b3aa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3AA | 16792 bytes |
font_01_sfnt_off0000cbbc.bin6d9a8f8ed5b5fd2c74589f110a767a914ad10c3212cd17ee4ba227c1c3921e30 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBBC | 16324 bytes |
font_02_sfnt_off0000f4f9.bin409e81f561745fd4597a6c236df00350f51b19e04c71f0410a332e1fe8167969 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4F9 | 11348 bytes |
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