MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm pointing to multiple domains, many of which are hosted on compromised CMS uploads or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The file's structure and numerous external links are consistent with a spearphishing attachment designed to lure users to malicious sites.
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://ncfc.com.tr/ckfinder/userfiles/files/21621582948.pdf
- https://unitjaya.com/contents/files/17402936888.pdf
- http://adhdesign.de/userContent/files/20210903134618-wutajefojeletasepajage.pdf
- https://dzido.pl/userfiles/file/rabagifijatig.pdf
- http://vit-physio.de/file/tenubexulunenof.pdf
- http://first-group.kr/ckupload/files/zelowogonafifiwibew.pdf
- https://enerjimakine.com/tsrm1/img/userfiles/file/90916561545.pdf
- http://partner-support.net/user_data/userfiles/files/30853259639.pdf
- https://futurefacesmiami.com/uploads/file/tijumonix.pdf
- https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/f7352a01536c7b97ead1d1d95fbf81d7/98491965558.pdf
- http://ambiance-cinema.fr/wp-content/plugins/super-forms/uploads/php/files/3671c5ff495449a37b9f8058995185f9/39139576634.pdf
- http://pelesiuvalymas.lt/i/File/24600789359.pdf
- https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/a21404bbc5432dfa96800472780479a3/85583243942.pdf
- http://daechienglishpark.com/ckfinder/userfiles/files/gelep.pdf
- http://sangjeom.com/userfiles/file///11259781654.pdf
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/161416c6fa6f24---rukovokitadalezureta.pdf
- http://yomamasushitogo.com/uploads/files/7232281163.pdf
- http://foto-preiss.at/upload_files/files/35812230343.pdf
- https://luminex.pl/upload/file/rebapolowusegarute.pdf
- http://ivankotov.ru/img/lib/file/50383622662.pdf
- https://mb-classic-service.de/userfiles/file/63659901396.pdf
- https://fong-cai.com/upload/files/guxasosevi.pdf
- https://cli-kh.com/uploads/files/202109120632526964.pdf
- http://himalayakebab.irafbrothers.com/shipinc/userfiles/files/liminisanepipulaxerobad.pdf
- http://sualpturizm.com/userfiles/file/dufeta.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=top+android+emulator+for+windows+10
- 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_off0000c264.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC264 | 16792 bytes |
font_01_sfnt_off0000da76.binba62e7f0c1f0bba9a0e7187e619d2249cbcc408ac57ee4386d5841411bee125a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA76 | 17356 bytes |
font_02_sfnt_off0001079a.bin23f1e30b45ed4febad0a1d028a3485556911f3aeb69166c1bb912e1634b9762c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1079A | 10984 bytes |
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