MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high probability of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to various websites, some of which are hosted on compromised CMS upload directories. This suggests a potential phishing or malware distribution scheme, likely delivered via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
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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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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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 http://okuninka-biale.pl/userfiles/file/fezakijuzizaf.pdf
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/3859de5fba7ee28e7aec7bccab410336/vugulemigopu.pdf
- http://learnersdigest.org/userfiles/file/94628779692.pdf
- http://joyear.com/ckfinder/userfiles/files/99815855573.pdf
- https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/59d45lq1adomvfbtkj4fbout5a/dogatusunupixudodu.pdf
- http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16075f61b92850---kuxekugubetibiregototat.pdf
- https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/af88bee7c90f0db23fd12d9457b92033/76365398838.pdf
- https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/997cccdde7d57868a5bca871acd2deb8/xafojenapal.pdf
- http://slp72.com/clients/7/7b/7b902bee17765b19ebdde6030f24742d/File/mibemovaligujisikomu.pdf
- http://labsshop.com/d/files/gijumixaredu.pdf
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bef5c54b9da---40248968654.pdf
- https://asiquim.com/ckfinder/userfiles/files/zawuzomifu.pdf
- http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc0eb27bcf---29660241808.pdf
- https://dineflon.com//files/71656982476.pdf
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089b82a2bdd4---towujagotedazenub.pdf
- https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/nml65d2mklngipbkaddc3ejhq4/78725343350.pdf
- http://rentaruedas.com/files/others/gofirosewufiwe.pdf
- https://sindonis.com/userfiles/file/kewofofarojuw.pdf
- http://burchiellati.com/file_fck/file/xedibisilokodizir.pdf
- https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/13521144af5909b138d1ed30d59e028d/lazebofupemag.pdf
- http://mousike.it/img_ins/files/2070756836.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=ignou+assignment+solved+2019-20+bag
- 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_off0000e976.bin6c49e3b4f6e7e895a70acdbc917ede2fe22e54a0263ea915aa8085943e6ad5ab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE976 | 17544 bytes |
font_01_sfnt_off0001173d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1173D | 16792 bytes |
font_02_sfnt_off00012f54.binbcdd3ae6825750ce5a1bdeff3e93f4565dcac8deb2d48a6fd4e2c1b05e04ee49 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F54 | 11244 bytes |
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