MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs pointing to potentially compromised websites or disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' further supports the malicious intent of distributing links for nefarious purposes.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
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 https://allytemp.ru/uplcv?utm_term=sistema+urinario+pdf
- http://htwy.com/upload/file/166408962.pdf
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/1c1757764a2a4d06111812439f601fb6/53296225041.pdf
- http://edwardfmcgintypa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/7812805614.pdf
- https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16137e5a9e48f0---dopanalojepuvodena.pdf
- http://sancheonglittletheaters.com/upload/userfiles/2021/09/files/210921014719.pdf
- https://uslugiinzynierskie.eu/eurostyl/photos/file/20810003230.pdf
- https://tnmkor.com/FileData/ckfinder/files/20210908_54202A8A568B2AD5.pdf
- http://blesk-stroy.ru/userfiles/files/xowuvumujumaxibipul.pdf
- http://fantalife.nl/userfiles/file/94068686147.pdf
- https://holcom-solar.com/webroot/img/files/34284737152.pdf
- http://fusen-es.info/yamituki-n/uploads/files/50272364947.pdf
- https://rux-thai.com/ckfinder/userfiles/files/51026492546.pdf
- http://saigondome.com/uploads/userfiles/file/86887806049.pdf
- http://jedzenie365.pl/ckfinder/userfiles/files/14474646782.pdf
- http://e-district.org/userfiles/file/74128211615.pdf
- http://hertzlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/861760921.pdf
- http://labellebeaute.com.hk/ckfinder/userfiles/files/69272481684.pdf
- https://galaxytraining.examinationonline.com/files/69886131288.pdf
- https://sesconbs.org.br/ckfinder/userfiles/files/31626087011.pdf
- http://eapver.com/upload/ckimg/files/202109161707429502.pdf
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1612ffc596f8a4---bejabo.pdf
- http://msinziniering.com/userfiles/file/sowogasonixe.pdf
- http://bobas24.pl/Upload/file/53011771840.pdf
- http://everintelconsulting.com/upload/file/202109131606162403.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- 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_off0000c0d2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC0D2 | 16792 bytes |
font_01_sfnt_off0000d8e4.bin6337967de2c957219168f6e74dcfa79900f472d7910ffaa64c5fa422c9ffde2e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8E4 | 18804 bytes |
font_02_sfnt_off0001093c.bin4b30a138a9c1d8cd8508f15141a99caa08149b3385127a6c5071c8e9bfbe6a6a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1093C | 10788 bytes |
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