MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, indicating a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or delivering a secondary payload. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9849
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://chiron-ventures.com/chiron/home/img/upload/files/210916140152813858p1k1v.pdf
- http://npxbyy.com/wang3_3_10_27/Upload/Upload/file/202194949556547.pdf
- http://stark-tools.ru/images/uploaded/tabitaxotapugezugotox.pdf
- http://guojingmall.com/userfiles/file///34802834453.pdf
- https://jkmart.net/FCKFiles/File/lewesafa.pdf
- https://xyoaa.org/sites/default/files/files/65782295425.pdf
- http://sakaryakasaplarodasi.org/userfiles/file/noniwegijarigogazese.pdf
- https://www.sibirprokat.ru/ckfinder/userfiles/files/zopiwosiliwenivexijus.pdf
- http://giaexploring.it/userfiles/files/66362676240.pdf
- http://xn--h49al71atridzo.com/userData/board/file/xesezutep.pdf
- http://churchtextile.com/userfiles/file/lopaxenarefonolesumeduna.pdf
- http://aias.pnu.ac.th/ckfinder/userfiles/files/54511850086.pdf
- https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/5fhp2vs3eks9fmr5cp35k2587v/39785226663.pdf
- https://ostrichtours.com/ckfinder/userfiles/files/61350541480.pdf
- https://electroagro.es/pub/files/fugujazuzimekuxudep.pdf
- http://sten.kr/club/data/userfiles/file/20210911113055.pdf
- http://news-hk.net/uploadfile/file///52456542381.pdf
- http://keystoparadise.com/userfiles/files/gusipemalanuwapativim.pdf
- http://valencia.thepokeluau.com/uploads/files/20538856227.pdf
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ad7685e619---wiwemurutitokisoruwi.pdf
- http://finara-v.com/file_media/file_image/file/58912856246.pdf
- http://liveranigioielli.it/userfiles/files/fuwiwusez.pdf
- http://chromowane.com/userfiles/file/59165530209.pdf
- https://promise-land.com/upload/file/fotilijowikumopufefo.pdf
- http://librojuridico.com/aym_images/files/9288297021.pdf
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/595b917b0bf0b420d53e22c7923e9e88/tikalenibakokunida.pdf
- http://hungbuloon.com/media/ftp/file/fomoruxegefexegejifalu.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=reset+mobile+network+settings+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_off0000e7e6.bin2cfffab5d0546d2a52cb3a853272b025f2a80b96df3194b9ec410da9d6fa6d0a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7E6 | 18428 bytes |
font_01_sfnt_off00011710.bine7621dfcf84bb4c9b58c0242ed233183692e347910c21a39c77f0cb9d519d77f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11710 | 10956 bytes |
font_02_sfnt_off00013050.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13050 | 16792 bytes |
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