MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a significant number of external links, many pointing to compromised WordPress sites or disposable hosting, forming a link farm. The presence of embedded JavaScript and a high ML classifier score, along with ClamAV detection as a phishing trojan, strongly suggests malicious intent. The primary goal appears to be redirecting users through this link farm, likely to phishing pages or to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 7
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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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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://aodaibooking.com/FileData/ckfinder/files/20210906_2350B918B0B9F784.pdf
- http://kooijobs.in/ckfinder/userfiles/files/9406281618.pdf
- http://www.ernakulamarchdiocese.org/www/js/ckfinder/userfiles/files/ruvifoge.pdf
- http://k9careclinic.in/ckeditor/ckfinder/userfiles/files/bukuxijulu.pdf
- http://champagne-marc-chauvet.com/images/files/96314122936.pdf
- https://stiglic.sk/userfiles/file/nefagumimeden.pdf
- http://gibisch.org/files/files/35949297339.pdf
- http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143157cc3740---sezolu.pdf
- http://limobebe.com/userfiles/files/62710883638.pdf
- https://value.ae/userfiles/file/15538610124.pdf
- http://congluc.com/upload/files/visevilekowuf.pdf
- http://www.impactit.in/ckfinder/userfiles/files/57772418653.pdf
- https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/bf5db9ab484c4e51a5791a6329fb5c73/zebupem.pdf
- http://norrlandet.se/userfiles/file/zuxavinisalajawafurabafi.pdf
- https://costarica4d.com/contents/files/77743091475.pdf
- http://studiotecnicopetrillo.eu/userfiles/files/1511679120.pdf
- https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f3a3f0e413---gukikinizatifupoje.pdf
- http://feminella.ro/upload/fck/diwoman.pdf
- http://helenhotel.vn/upload/files/43874957992.pdf
- https://bahceneryaman.net/public/content-images/files/zafobifu.pdf
- http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135bec794272---lelojimosanenazopibuw.pdf
- http://anadolumatbaa42.com/genelresimler/file/97758585950.pdf
- http://lamekatus.com/uploads/ckeditor/files/novukovesele.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=winner+of+indian+idol+9
- 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_off0000ef2c.bin2c8c87ff6d236dccdc6693b29d866240a28e43399b1bf5bfb2cddb805dd32d9b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF2C | 18020 bytes |
font_01_sfnt_off00011e0c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E0C | 16792 bytes |
font_02_sfnt_off00013623.binb296f69c5d63fb7c998b91fd2cf1f30fbab1081f5b7ce23d9e9817833f601cd9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13623 | 10240 bytes |
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