MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URLs, many hosted on compromised or disposable domains, suggesting it functions as a link farm. These links likely lead to phishing sites or further malware downloads, aligning with a spearphishing attachment attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://krisoc.ru/uplcv?utm_term=legends+of+monster+apk+download PDF link annotation
- http://gocoachfox.com/userfiles/file/39448542928.pdfIn PDF document text
- http://tsyrulnikov.ru/upload/file/37795473304.pdfIn PDF document text
- https://genegurumiraclehealer.com/userfiles/file/95667021803.pdfIn PDF document text
- http://chithanhplastics.com/uploads/userfiles/file/pafitoj.pdfIn PDF document text
- https://dzido.pl/userfiles/file/84531049879.pdfIn PDF document text
- http://boletin.alicantehosteleria.com/lib/ckfinder/userfiles/files/xeluwukakakosoxebuvuxab.pdfIn PDF document text
- https://orig-shop-gsm.ro/ckfinder/userfiles/files/66377460528.pdfIn PDF document text
- https://dusunceokulu.net/resimler/files/fupejaxowek.pdfIn PDF document text
- https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/65it9ju6dvarbks75feqkrdl71/99312907766.pdfIn PDF document text
- http://jmk.kr/ckfinder/userfiles/files/vabepodamukos.pdfIn PDF document text
- http://silver.jo/ckfinder/blanc/files/50456082964.pdfIn PDF document text
- https://infotechloyalty.com/bot/ckfinder/uf/files/xibej.pdfIn PDF document text
- https://careerexpo.alljobsinliberia.com/ckfinder/userfiles/files/80941964458.pdfIn PDF document text
- https://sunnyrosesschool.com/userfiles/file/12045764845.pdfIn PDF document text
- http://myappartement.de/web/editor/files/21267408022.pdfIn PDF document text
- http://sdv.sk/userfiles/articles/file/2401001840.pdfIn PDF document text
- https://ms2oke.com/contents/files/soveliwowisi.pdfIn PDF document text
- https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/atrqgs86bbutbmgckqr8l99rn0/10987605620.pdfIn PDF document text
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/21972e8c436a390833bfb976a0b689c7/27090160822.pdfIn PDF document text
- http://edwardfmcgintypa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/96584442194.pdfIn PDF document text
- http://firsttimehomebuyerstudy.com/images/file/xakonerutumimulekujuv.pdfIn PDF document text
- http://dietgame.net/admin/fckeditor/data/file/20210916150324.pdfIn PDF document text
- https://artlabjo.com/userfiles/file/4203453516.pdfIn PDF document text
- https://konteshamamotu.com/userfiles/file/daditurorotumekupegomo.pdfIn PDF document text
- http://kietminhrivet.com/upload/files/sudolowixake.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000afab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAFAB | 10884 bytes |
SHA-256: fac438cae030c6b5ed5b01ac7942ef25eb03e210584b9ab361fa9e89cafe63ed |
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font_01_sfnt_off0000c8b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC8B4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e0c6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0C6 | 14988 bytes |
SHA-256: 95f9ee2d7d5521b03cf23e1b56f9af377a4398d108137a7bb30c7ce1e74e959a |
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