MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains numerous embedded URLs, many of which point to compromised CMS upload storage, suggesting a link farm designed to obscure the final destination. The presence of these links and the overall structure strongly suggest an attempt to lure users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 6
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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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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 http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a99efa2c77a---gizuxedejufop.pdf
- http://au-zlato.sk/upload/files/nuravukiz.pdf
- https://mfdesign.hu/files/file/vadupobemoj.pdf
- http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d89bcd995f---kimefuferet.pdf
- http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084bccd17114---13682798095.pdf
- https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/b5efbf79b88af23147be7859f3629f4c/tanixokipofu.pdf
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/r85gbag6anqk1ig0qph52e4og0/48288474549.pdf
- https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/c1c2209d67ec56ebb19fcf1f4cdeb1b2/miburetogafi.pdf
- http://btc-ltd.com/upload/file/14662154814.pdf
- https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/68a30f3cf4c36f47573a5b3c1598114a/nudebedojubifiben.pdf
- http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/cea5346b666b119dbfaf9eba4f67f6b0/damilid.pdf
- http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/19q5km0a2flcn9ou2msoi4lko0/15957153163.pdf
- http://cascinamana.it/userfiles/file/35995861750.pdf
- http://pokeocncafe.com/uploads/files/wunisulu.pdf
- http://etcad.net/np/upfile/file/vasalafilevopumirupiduden.pdf
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16084bef2862c8---14283212403.pdf
- https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/01gol36jd23356719b6jvou4l9/ruposabusuwesi.pdf
- http://bagiez.de/userfiles/file/zipewofopuvobuluvidofo.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087e6feee616---zibijip.pdf
- http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16071fffa84c6d---fugejetatukasekupowox.pdf
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160841ec01804c---detasarilugenozuvar.pdf
- http://maility.pl/_ADRESuserfiles/file/1107118061.pdf
- http://nicolalazzarotto.com/userfiles/files/jokalejabufewiwod.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=thronmax+mdrill+one+manual
- 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_off0000d0ba.bin49e123ce2e5b7e8be20771e5954b416d64ab16bf0d28a1ce4d7c6198cc57c275 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0BA | 15928 bytes |
font_01_sfnt_off0000f95a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF95A | 16792 bytes |
font_02_sfnt_off00011171.bin911ddb985ee29cfcab02ac69c8ad55dc953d28c8d264a5054d9f3b8604805bd9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11171 | 10412 bytes |
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