MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of links, many of which point to websites hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
Heuristics 6
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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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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://studioguidobarbieri.it/userfiles/files/reburujepu.pdf
- https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/161411397a1535---43507588133.pdf
- https://xn--z4qq44i.tw/upload/actfiles/62001123742.pdf
- https://anandalaya.in/resources/file/73931241629.pdf
- http://fkjz.cn/upload/files/2021/09/202109021504064753.pdf
- https://editions-tlp.fr/ckfinder/userfiles/files/wazuwutogapenuniwide.pdf
- http://semanbio.com/upload/files/fudipopajupikatifa.pdf
- http://compsult.net/userfiles/file/mokivokonojo.pdf
- https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/tp4uldfbejtk9gqonmpfiq102g/polemutitexujabepepobima.pdf
- https://haciendaloscipreses.cl/upload/file/53595071439.pdf
- http://bresky.cz/res/file/78231200130.pdf
- https://halkapsikoloji.com/userfiles/file/nitobojifeduzoduzoworu.pdf
- http://marktoby.com/akram/know_news/admin/userfiles/file/josenudugupev.pdf
- http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16133415d73c56---26625564805.pdf
- http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612eedfeb1510---57480961475.pdf
- http://waterlootour.com/FileData/ckfinder/files/20210905_91F804A83B1AC5A7.pdf
- https://alexspa.pl/userfiles/file/pukunavadis.pdf
- http://abwcockeysville.com/uploads/files/269789802.pdf
- http://okzawidow.pl/img/upload/files/9855797226.pdf
- https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/e04f1053a66618776d0e64904a217246/14369007664.pdf
- http://vnos.vn/app/webroot/uploads/files/27217623723.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=sword+art+online+alicization+war+of+underworld+episode+19+english+dub
- 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_off0000cafa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCAFA | 16792 bytes |
font_01_sfnt_off0000e30c.bincc2c6be9a9f4399ef2629e8fd650746137d4fc28e85ebbfacf84ea48bc5d94f4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE30C | 21504 bytes |
font_02_sfnt_off00011b57.binf173a0b0054523127ee6dd9208d15422f8ef9605fe88f9b647208a9c3b55da90 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B57 | 11580 bytes |
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