MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many embedded URLs pointing to external sites, some hosted on compromised WordPress uploads and disposable domains. The ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION heuristics strongly suggest malicious intent, likely related to phishing or malware delivery via the linked content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://ciaooo.ru/uploades/userfiles/file/sutefakazivonifoxalapupo.pdf
- http://9y.bfage.com/upload/files/20210910054348.pdf
- http://artgrafika.cz/userfiles/file/jadokuvidalum.pdf
- https://aukshanya.promosing.com/alpha/ckfinder/userfiles/files/kidinelajiladuxep.pdf
- https://maggies-handmade.com/UserFiles/files/naxokazakalasezenofubof.pdf
- https://kamarkosong.com/contents/files/77811823637.pdf
- https://millinerandassoc.com/files/file/37523379519.pdf
- http://terwaarde.be/ckfinder/userfiles/files/wajiwo.pdf
- http://thaisomboonautopart.com/userfiles/files/befiw.pdf
- http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135ae18b9961---15193717837.pdf
- https://demircanticaret.com/userfiles/file/67005136842.pdf
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef9d3e5751---21224702007.pdf
- http://rurisnet.org/images/file/kaboxu.pdf
- http://ljsmelt.com/upload/files/25873655140.pdf
- http://cherriestattoo.com/ckfinder/userfiles/files/nesabomulu.pdf
- https://jager-ig.tw/up_photo/file/78644680578.pdf
- http://hmconcretemixingplant.ru/d/files/luwodedun.pdf
- http://www.europesolidaire.eu/userfiles/files/4387570840.pdf
- https://pavillonwohlen.ch/userfiles/files/tifisi.pdf
- http://dominopark.pl/public/upload/ckfinder/userfiles/files/xamewefigubofegopozovosat.pdf
- https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161383937323d2---59768846000.pdf
- http://ark-mr.com/data/home/qxu2063190031/htdocs/uploadfile/files/69540622020.pdf
- http://machin.kr/userData/board/file/58800050565.pdf
- http://ilsungwarehouse.com/userData/ebizro_board/file/38038166849.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=best+escape+games+for+android
- 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_off0000ee98.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE98 | 16792 bytes |
font_01_sfnt_off000106af.bin1999a934bab8a6c719d4b5e8550b035e02bf369c3ea3b2368a1a76cf6d686743 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106AF | 10968 bytes |
font_02_sfnt_off00011ff7.binef8e09f0a2883e5e9030c4a50155b8048cfbb5c4a0dab8688fc44b1b01dbfc58 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FF7 | 17172 bytes |
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