MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised websites, indicating a phishing or malware distribution attempt. The heuristics suggest it functions as a link farm on disposable hosting, likely to obscure the ultimate destination of the malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9897
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 https://oniceh.ru/uplcv?utm_term=physical+and+chemical+changes+class+7+pdf
- https://mosconi.net/userfiles/file/fisovafazip.pdf
- https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/1c247dbc383d1ac21690184b9d714b69/wotok.pdf
- http://baschin-heizung.com/meineBilderAlbertGrundschule/file/93759893630.pdf
- http://daegyung.kr/userfiles/file/20210828165235.pdf
- http://diegogenna.it/userfiles/files/gegip.pdf
- https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/f04354b85527ab9b0eb4f100c7763a2f/9525100527.pdf
- http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a15b545235b---rabupekepegisejiri.pdf
- https://goodluckfishing.com/ckfinder/userfiles/files/41882428692.pdf
- https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/07b9cdcd80fe1899fcb8e2edf9515484/14845940597.pdf
- http://anhuifan.com/upload_fck/file/2021-5-9/20210509091410473731.pdf
- http://akcjonariusz.com/UserFiles/file/68744789949.pdf
- https://aitalk.vn/upload/files/55879710766.pdf
- https://mariellatriolo.it/public/file/tawitajewelonuzugufoj.pdf
- https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8f1df124a8---84681478890.pdf
- https://webmenuplus.com/images/file/pefuwitabajekakoxe.pdf
- https://nepalonetours.com/userfiles/files/78098464938.pdf
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079516f6768f---xipazudisab.pdf
- http://gtlitalia.com/userfiles/files/37261534052.pdf
- https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/f9efae75fa56d68b1865a812a15905ea/geruwosetovusuxipukuku.pdf
- http://vanguardhungary.hu/userfiles/file/bikiwiraxivazifexale.pdf
- http://satakantaresort.com/user_img/files/76622554437.pdf
- https://stdtekstil.com/upload/ckfinder/files/jadobafawewejafe.pdf
- https://www.analfissur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084c5d1dfe63---23398901817.pdf
- http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098295430375---navelop.pdf
- http://cathugo.de/res/wysiwyg/file/34954814669.pdf
- https://amadesafar.ir/basefile/amadesafarir/files/50933496083.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_off00010a07.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A07 | 16792 bytes |
font_01_sfnt_off0001221e.binbb1330f2f40eb7c4e8ea48d3404deba746dc24bed988f33f7d78fbee68ff35c2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1221E | 10916 bytes |
font_02_sfnt_off00013b05.bin8dab2edc62f48a46d75e5fc3d06eabeff2bdf89ef245e7359cc8a63c6719cf93 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13B05 | 18456 bytes |
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