MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm pointing to compromised WordPress upload storage, suggesting a phishing or malware distribution attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway scanning. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://ketchas.ru/uplcv?utm_term=archived+messages+on+messenger+app+android
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161359f5375bf8---fojaj.pdf
- http://biznesfishki.ru/files/userfiles/files/saxebuvabivubafumutaga.pdf
- https://estoniapools.com/contents/files/43379488241.pdf
- https://uleshuzatabc.hu/files/file/13748947444.pdf
- http://xn----ftbkdcamitb5h.xn--p1acf/files/fck/file/xivusajofulolor.pdf
- https://lederstuhlshop.de/ckfinder/userfiles/files/9584929127.pdf
- http://xn--h1aaebajlcgx.xn--p1ai/sadm_files/97986959337.pdf
- https://pui-vital.ro/msg_media/file/rogekizonok.pdf
- https://jnvhardoi.org/ckfinder/userfiles/files/58411379746.pdf
- http://swotaweb.com/img/upload/file/56516572110.pdf
- https://tivirtual.com/userfiles/file/47846424478.pdf
- https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/710c4fd96dd3adbd0c1b384677dc2392/negef.pdf
- http://mcrlclient.gilcom.ro/ckfinder/userfiles/files/21350492229.pdf
- http://kondicionery-noginsk.ru/upload_picture/file/32347593950.pdf
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/1fafc12430735519327efe541a6e0360/reroki.pdf
- https://uzmanwebci.com/calisma2/files/uploads/9542396068.pdf
- http://sisparts.pl/zdjecia/fck/file/54386070353.pdf
- http://olddieselparts.com/ckfinder/userfiles/files/migepanibadivugedelab.pdf
- http://clinicaveterinariagoitese.it/userfiles/files/zokawojiwi.pdf
- https://virker-ikke.dk/files/93465642675.pdf
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161401edea4d93---womofiju.pdf
- http://keystoparadise.com/userfiles/files/99387485830.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_off0000def7.bin4ccb91243e309206f783c1e3c4de8243d19f422734f8c91270242953c96e713b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEF7 | 10864 bytes |
font_01_sfnt_off0000f7a8.bin1f331fe343cd47c410674c3ea10fdda4b5edb1f74b69b5b9517e2a36d31e1206 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7A8 | 18208 bytes |
font_02_sfnt_off00012680.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12680 | 16792 bytes |
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