MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, and it contains embedded JavaScript. The PDF also features a link farm pointing to numerous external URLs, many hosted on compromised or disposable domains, indicating a phishing or malware distribution attempt. The embedded JavaScript likely serves to redirect the user or download a secondary payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
Heuristics 7
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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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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://synerhu.ru/uplcv?utm_term=apk+mod+shadow+fight+2
- http://datong-travel.tw/upload/ckeditor/files/20210905013356.pdf
- https://jjcfurnituremaker.com/userfiles/files/toxukeziremopoxi.pdf
- http://belly.bpv.su/content/files/files/kutevejilotigokakisoxe.pdf
- http://adhdesign.de/userContent/files/20210908045806-dilivej.pdf
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16143b4d22a27b---wilonimekuvelap.pdf
- https://cualuoihoanmy.com/uploads/userfiles/file/zawoxagiruduv.pdf
- https://otoform.com/upload/ckfinder/files/94211780673.pdf
- http://wych123.com/upload/files/1167861529.pdf
- http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/161423c2d64f26---keridix.pdf
- http://lavalnerina.it/userfiles/file/34841664507.pdf
- http://idolyokocho.com/js/ckfinder/userfiles/files/37447655823.pdf
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/b8577ea69b7b1ae41b582ebf0bd5a550/74958326769.pdf
- http://perfekt-dom.pl/designhome/admin/userfiles/file/73319096460.pdf
- http://metabolizmusonline.hu/images/upload/file/41905617579.pdf
- http://thuaphatlailongthanh.com/upload/contentFile/minhchau/file/17222403915.pdf
- http://helloslow.com/data/userfiles/files/zurezivizikemawoba.pdf
- https://chung-pei.com/userfiles/file/venerubarefojimuzo.pdf
- http://clubsahdianagalati.ro/upload/editor/file/8012763622.pdf
- http://files.ibiza-ferien.de/file/zoxinodafevukug.pdf
- http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wikane.pdf
- http://skia22.ru/pic/file/gorakabomizi.pdf
- http://ufcnagykanizsa.hu/userfiles/file/96594445475.pdf
- http://webinaris.training/ckfinder/userfiles/publics/files/59260125125.pdf
- https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/161419cac2046f---77068220360.pdf
- http://parfumland.sk/upl/89549026134.pdf
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b259027565---78454339720.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_off0000d19c.binf8cb6d31cc73fa6189e9692186ca2238bf4ca95f926894edcfa3c9c02ba41b28 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD19C | 17440 bytes |
font_01_sfnt_off0000febc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEBC | 16792 bytes |
font_02_sfnt_off000116d3.binc5c21c179653d28936aca5d920de7e77727372b90978bf4f3495f77454146353 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116D3 | 10840 bytes |
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