MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS upload storage or are part of a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading further malicious content. The embedded JavaScript is a key component in initiating the malicious workflow.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 8
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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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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://drafthe.ru/uplcv?utm_term=isometric+projection+of+cylinder
- http://tafgambiatours.com/userfiles/file/podanulusamunosodet.pdf
- http://andreaslasnik.com/data/files/werijavefedoz.pdf
- https://bharatbiodiesel.com/userfiles/file/96057216258.pdf
- http://cimkezes.hu/uploads/ckfinder/userfiles/files/forenorasaguvok.pdf
- https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0befd59eca---kuluzesawefabazakovur.pdf
- http://uamarkets.com/images/file/wilutiduf.pdf
- https://digireg.cn/upload/32267415240.pdf
- https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/vh1d2d1ijst68bod1mjh7c1ruq/7594692081.pdf
- https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb9b8159d74---ribidibalobulewa.pdf
- https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/841ef6d7b31739ec854e7bbc7c7690d9/92281946848.pdf
- https://alzubidi.com/userfiles/files/82951858820.pdf
- http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607a43d122237---puwarabakovuxegulezejizo.pdf
- http://aliceinformaticasrl.com/user/pages/99252346957.pdf
- https://securitydm.rs/slicice/file/nadixekijirapim.pdf
- http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210618125309376433uhd35g.pdf
- https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9128195ce5---lusagejen.pdf
- https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160befc670cacd---79593640438.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b76358bd9fb---fovosax.pdf
- http://aksaaydinlatma.com/img/editor/image/file/kezatuwule.pdf
- http://xn--49s538bo8ux8c.net/userfiles/file/74339070285.pdf
- https://banderlogclub.ru/Files/file/10120073652.pdf
- http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160798e44dde7b---18932283393.pdf
- https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608ab6d63e0c2---22000843456.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_off0000caa1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCAA1 | 16792 bytes |
font_01_sfnt_off0000e2b3.binb14e6fb912209df8919e67d25cf970cc0efd8bd0af6cb3b3164bd65401367b03 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2B3 | 17012 bytes |
font_02_sfnt_off00010f8f.bin3ee61a5923c7c3b267350075055b19332a0d55bcea36b205c231a697305e8265 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F8F | 10816 bytes |
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