MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external links, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading a malicious payload via the link farm.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 8
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://pastelbuilders.com/userfiles/file/xavizibiregidunobavo.pdf
- http://eros-arena.name/eros/userfiles/file/72608569805.pdf
- http://xn--h1acbpobggs.xn--p1ai/data/files/pibekofofu.pdf
- http://dgjst.com/upfile/file/xoforabe.pdf
- https://mannerfeltdesignteam.se/ckfinder/userfiles/files/girubebinowumawuwodo.pdf
- http://clubmaniacr.com/campannas/file/10526833532.pdf
- https://7mark3t2-7aya.com/contents/files/dadop.pdf
- https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142560893cea---77775074085.pdf
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1614658d6c2ebc---mewakubeniwevezugejon.pdf
- http://clarksville.net/wysiwygfiles/file/pibal.pdf
- http://ciccioinpentola.com/userfiles/files/doposonasisisogaluja.pdf
- http://eko-gospodarstwo.eu/files/file/jojorori.pdf
- https://cardion.dk/gfx/fckimages/file/3767155367.pdf
- http://beming.com/ressource/site-image/files/8938505460.pdf
- https://olympicwroclaw.pl/zdjecia/fck/file/tozizazatarek.pdf
- https://expobar.vn/app/webroot/files/images/pages/files/bediviwemapefalimugir.pdf
- https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f8ae19c66c---zusadirudesedanusokivez.pdf
- http://michelschuurmans.nl/images/uploads/file/4764696647.pdf
- http://albarossa.jp/js/upload/files/36459020044.pdf
- https://karatenarrewarren.com.au/ckfinder/userfiles/files/92370491776.pdf
- http://cattaneoarchitetti.it/userfiles/files/66335027431.pdf
- http://abwrosedale.com/uploads/files/faxaliwikelibivejetir.pdf
- https://marcuspietrek.de/MARCUS/files/file/35236702551.pdf
- http://bezpiecznamlodosc.org/files/file/69829097400.pdf
- https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/517c4593aeba594f469e45cd4efb5b80/96774395849.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=download+gta+sa+obb+highly+compressed
- 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_off0000df80.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF80 | 16792 bytes |
font_01_sfnt_off0000f792.bin3f55e9bc0c835dd01e720daa3ad40257a264481c29a2f3dd9d591769599af843 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF792 | 17428 bytes |
font_02_sfnt_off00012513.bin603c4baff965e0efbed653b043b6618eb5ae69fced9abb4c679cf4eb0dad92fc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12513 | 11300 bytes |
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