MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by ML classifiers and ClamAV as malicious. It contains a large number of links, many pointing to compromised CMS upload directories, suggesting it functions as a link farm. The primary purpose appears to be directing users to potentially malicious or phishing content hosted on these compromised sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
Heuristics 6
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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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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://anjilh.com/uploadfile/file///2021043023063922.pdf
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609faa9b1bc8e---tugoniwepifelumamex.pdf
- https://havanic.com/cache/fck_files/file/46783752208.pdf
- http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9a462c7940---bofetigusi.pdf
- http://slstudio.it/userfiles/files/88495651394.pdf
- https://steammining.com/userfiles/file/nuvebogorufakoxit.pdf
- https://giverny-bkk.com/upload/files/niwutifibaduvemepodotubat.pdf
- http://cokhihoaiduc.com/uploads/files/benew.pdf
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1692a59aa9---moxakusixene.pdf
- http://pincailight.com/zk/UploadFile/file/2021070311340473499.pdf
- https://hchoanglong.vn/userfiles/file/dufulejeremifemabad.pdf
- https://vildmarksjagt.dk/userfiles/file/weboniwuv.pdf
- http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/160841d3978253---fivagekokuwedom.pdf
- http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160847b546ee48---nilolakexunotuvofat.pdf
- https://canionglobal.com/FCKeditor/file/83202057098.pdf
- https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609c79b8abca1---sebutazitexisuxuludax.pdf
- http://bracyfamilyreunion.com/clients/c/c2/c2db1a97f769835965582c74015c7782/File/82151771267.pdf
- https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/1jo2i3f4hn5vcncd51ud114m80/42132984225.pdf
- http://areaengineeringsrl.eu/userfiles/files/16274296153.pdf
- https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/3aa2ff1bffa719d2e027aadb2b45dadd/jubazilizudivuz.pdf
- http://limuzine.md/userfiles/file/82597794617.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=how+to+do+path+analysis+in+amos
- 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_off0000ea3f.bin32e2a1398dd8cb594d8092ff07f1a5b06e8a81a7e14b2b4fc66f07e5fd261231 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA3F | 17892 bytes |
font_01_sfnt_off000119db.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119DB | 16792 bytes |
font_02_sfnt_off000131f2.bin8201b8d7e8f1300f69ed7e330fb58e9d5b6001b289162e78e4006b480375adda |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x131F2 | 10616 bytes |
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