MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file containing embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities. The heuristics indicate the PDF acts as a link farm, directing users to multiple compromised WordPress sites and other domains, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
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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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 https://archism.ru/uplcv?utm_term=how+to+get+wisdom+knowledge+and+understanding
- http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160709d52a4044---60223468564.pdf
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16098126646a0d---82716450310.pdf
- https://nedimgame.com/calisma2/files/uploads/7611714032.pdf
- http://liveranigioielli.it/userfiles/files/74117333152.pdf
- http://plusk-car.com/js/upload/files/suvozesijagimuki.pdf
- http://txextremecarts.com/userfiles/file/53874932287.pdf
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609876c6a0643---14220798535.pdf
- https://a2designbg.com/userfiles/file/46697023276.pdf
- https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/a975fffd40403f28a47543c52fc280f1/rifazuzawosu.pdf
- https://diarch.in/WYSIWYGImage/file/63330890529.pdf
- http://www.johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/22216947544.pdf
- https://echipamente-scule.ro/userfiles/file/35676816153.pdf
- http://libron.pl/fckupload/assets/file/79911552801.pdf
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160828b21a9032---22571268719.pdf
- http://korsorlampang.net/user_img/files/nufigipuv.pdf
- https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/bfbd711a1fa435ab8bd9fbbb53e1dfb4/32678764081.pdf
- http://kayapaliinsaat.net/file/31801505629.pdf
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16072d7b1615ec---zelupexedukerewaw.pdf
- https://sandzak.best/wp-content/plugins/super-forms/uploads/php/files/5329fdd4a40d8e52a657cfcb40921b7f/79994024686.pdf
- https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b3c8ebd09---80273137189.pdf
- https://www.ltgpartners.com/wp-content/plugins/super-forms/uploads/php/files/d7c56464ad7463fbdafeba3a3a372758/ferar.pdf
- https://www.apollopowersystems.com/wp-content/plugins/super-forms/uploads/php/files/8449d3cf3c36c76f2977dd24889dc272/vefozaxega.pdf
- http://aapltd.net/userfiles/file/tarikojokuvutubadob.pdf
- https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/6cf9bb0962fdd65b7ce5c3f10a58b03b/79969060438.pdf
- http://hongphuc.vn/userfiles/file/mebamafolofoju.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_off0000f51b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF51B | 16792 bytes |
font_01_sfnt_off00010d32.binc7fc36fa59245a5b30eb3b36894539251df13da2a2ed85c7ab806c50b914a587 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D32 | 10860 bytes |
font_02_sfnt_off00012615.bin066e7ff12e8ac6131decadee105e3f0d25931d04ab97ef6356b1684695dea2f6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12615 | 16916 bytes |
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