MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. It contains numerous links, many pointing to compromised WordPress upload directories or disposable hosting, indicating a link farm designed to redirect users to potentially harmful content. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf.
Machine Learning
- Nyx PDF Classifier malicious score 0.9987
Heuristics 6
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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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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://hzqzg.com/d/files/raxexusobodoxubijudefu.pdf
- https://envida-nieuws.nl/bsb_website/upload_fck/file/pigovotokulorozinapezu.pdf
- http://steps4cancer.org/clients/a/a7/a78c374070a178914b502abaf3db82b8/File/panomu.pdf
- http://sammyuriasproperties.com/userfiles/files/85885906856.pdf
- https://wagaskar.com/media/gemiwejorolosubefikosiki.pdf
- http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/f512434bd9f94d80a7bf27a3f821a3da/97811388085.pdf
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074d52a20e88---lotuxofunotuminotivino.pdf
- http://swiss-ex.com/kijumitajabewami.pdf
- https://listapp.in/ci/userfiles/files/23375951518.pdf
- https://wavesmaroochydore.com/wp-content/plugins/super-forms/uploads/php/files/n337ofuadrrijqkck3gsaqfob2/45127277000.pdf
- https://hgb.se/filer/file/398696819.pdf
- https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/77m9bfbs0vlrlh6vvdiuclecn3/manojaxeri.pdf
- https://anitt.in/ckfinder/userfiles/files/44055692531.pdf
- https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e71ea68b6---30843352274.pdf
- https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/08e5efef27827113f996c7fc4996fca4/nivoterokesi.pdf
- https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608aae79ec798---6248204782.pdf
- http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a06a60b0f33---wamifegedodokavuzawekojob.pdf
- http://duhochoangthanh.com/upload/files/jisugebibapunoxavib.pdf
- https://webmenuplus.com/images/file/pinux.pdf
- https://led7.ru/file/7035953093.pdf
- http://baschin-heizung.com/meineBilderAlbertGrundschule/file/lavomokerupedilexopiw.pdf
- https://hyundainhapkhau.vn/upload/files/35412976134.pdf
- https://n-zvuk.ru/upload/file/selib.pdf
- https://couvreur-hautdoubs.fr/internet_new/images_et_fichiers//file/86607988058.pdf
- http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16096d6f02d89d---43740159797.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+get+more+pets+in+prodigy+without+membership+2021
- 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_off0000dda3.bin02ca2ac7f7ff7c603cd8d07622ebb6ebbb35d8a61f438b00ede9accd05a5ca13 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDA3 | 16968 bytes |
font_01_sfnt_off000109ee.binc8f2ce3ea14d4cb0cc71d74fa92646862a07208d054d136319c16d39bd6c1b26 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109EE | 11356 bytes |
font_02_sfnt_off00012427.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12427 | 16792 bytes |
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