MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links to external resources, many of which point to compromised CMS uploads and disposable hosting, indicating a link farm designed to distribute malware. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for delivering a second-stage payload via the embedded URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
Heuristics 8
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://baovephuongtroi.com/vietkiendo/upload/file/97787167716.pdf
- https://fereshtegan.net/basefile/fereshtegannet/files/40329903844.pdf
- https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/n3okrq9doore1isp3dkm5m1f5u/81832280144.pdf
- http://developmentassociationofnagaland.org/nbloom/fckuploads/file/dakonef.pdf
- http://www.moyekolodin.com/files/kuxaxufaguz.pdf
- https://franchise-vietnam.com/app/webroot/img/files/fewifupovuzigaje.pdf
- https://aradmissions.com/ci/userfiles/files/gubajixagowapekafufine.pdf
- http://aven.su/userfiles/file/simenod.pdf
- http://xn--49s538bo8ux8c.net/userfiles/file/dovoju.pdf
- https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/84b89ffb2315a47f772cc430c0828567/2273465860.pdf
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/c625675e273b07bb1ab4a67457a88ddc/zixaxuwolewatevimivuxuge.pdf
- http://agendatourvietnam.com/hinhanh/file/93747689455.pdf
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160ba56f938a24---29777942350.pdf
- https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/4351e665b93dc9b756d6fb4c6de6dd42/27948405401.pdf
- https://proia.bg/userfiles/file/67716483186.pdf
- http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/16070082b22659---bebebamunutojufaman.pdf
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607170bc096c0---82811910773.pdf
- https://euroroma-bg.org/files/file/meravuxewotedamoleto.pdf
- http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d81948cfa3---paxuxusatesepula.pdf
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160866210b0b67---zezejugotoditofevapizom.pdf
- https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/a7894d9811aa09cf16d07d0ac3dc111e/78346603894.pdf
- http://fitnessklub-impuls.pl/uploads/assets/file/58540183003.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=law+of+contract+book+pdf+free+download
- 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_off0000c302.bin02bd7a603a7f6c92829cfc4ff660903d6b1e8976bd3f4c669895ed81105fb30c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC302 | 17124 bytes |
font_01_sfnt_off0000ee7d.bin5b673bb3b957e3a5fc2c710b815c42e85a1d33d0255e9f2d5538ec65aa97d7ec |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE7D | 10628 bytes |
font_02_sfnt_off000106cf.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106CF | 16792 bytes |
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