MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample is a malicious PDF detected by ClamAV and an ML classifier. It functions as a link farm, directing users to compromised WordPress upload storage and other disposable hosting sites, likely to facilitate the download of additional malicious content. The presence of a 'download button' heuristic further supports this malicious workflow.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://muzeumostrowiec.pl/obrazy/file/80133165153.pdf
- http://boilerservis.ru/uploads/files/latigevujidumaromudirobi.pdf
- http://circuitvietnamcambodge.com/hinhanh/file/98684397763.pdf
- http://guitarenko.fr/img/files/jusixowuv.pdf
- https://agatanorek.com/files/file/pedulotukijuzafomunak.pdf
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/4810fd3jff0vc2h22svu7ehom2/dolitunopexuvalava.pdf
- https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160a018c582295---xipimuponape.pdf
- http://canyonoaksmtg.com/~duckdi5/canyonoaksmtg.com/content/file/zigarav.pdf
- https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/9p0m4696vc4dlic8h297va7t7k/redufutivapamima.pdf
- https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/1c49e5a0d16376127ecceca746eaaa7e/80887054757.pdf
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160bef37a51b26---pozenuvowa.pdf
- https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/0iiamvmkttdoq6g92bbd2mbvli/jozirelofixokojodoxubog.pdf
- http://rakkhunnursinghome.com/user_img/files/91997699766.pdf
- https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607ddfa06d871---28856293150.pdf
- http://eaupureinternational.com/userfiles/file/74399349704.pdf
- https://dycmc.com/DATA/upload/files/202106290642018428.pdf
- https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/b3fe259a35dcf170c0d343de7095f052/71324121163.pdf
- https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610ebcd598d7e---59794864597.pdf
- http://wowbond.com/upload/Fckeditor/file/80430632232.pdf
- http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608010d6e1c77---58807008826.pdf
- http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5ec4d2a4b3---fidakemejerekuk.pdf
- https://stillwaiting.org/userfiles/file/69072937452.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=cambridge+igcse+business+studies+fifth+edition+textbook+answers
- 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_off0000f69e.binc462f497472e57e26369f8818007e9d048e7eb1191eb364bef94b7ed9db745c2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF69E | 11428 bytes |
font_01_sfnt_off0001114e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1114E | 16792 bytes |
font_02_sfnt_off00012960.bine8944ac6a52db1f840bf4be0f412fda482c84e1379d67138dcf3acee65a9c731 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12960 | 20120 bytes |
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