MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm hosted on compromised CMS uploads, with numerous distinct hosts and UTM parameters suggesting a phishing or redirection campaign. Although no scripts were extracted, the PDF structure and embedded URLs point towards a social engineering attack, likely spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9376
Heuristics 6
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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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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://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16094d8d5916d1---95139842693.pdf
- http://bagiez.de/userfiles/file/58498751721.pdf
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cffb41325d---xonijipovaz.pdf
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16072f0538ebdb---53844540630.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e4acf5314d.pdf
- http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/33e595ca6efbbbec0f26c0822bb0e344/77705180130.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/3d82cda1e97c2d094a12f78603121a28/68776151318.pdf
- http://stardentalcare.org/userfiles/file/dixavigeruwulagabe.pdf
- http://cncforginghammer.com/d/files/99661024278.pdf
- http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/b7b279ca69c8de3135c29e614bfa775d/3032229637.pdf
- https://xlspandoek.nl/userfiles/file/7103923581.pdf
- http://izdepskifamily.com/clients/1/1a/1adacdf247316bc4617b3617d965acc7/File/25269414153.pdf
- http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d41d47655b---bozate.pdf
- https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/62644870df83201caf34224528dba1a7/tasopijifuk.pdf
- http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bde35a09ea9---popuwuxuxalaxofajudines.pdf
- http://ildongwire.com/userfiles/file/56083785059.pdf
- http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082039031583---15329383051.pdf
- http://faw-asia.com/image/upload/files/5419839499.pdf
- http://meandnetworking.com/ckfinder/userfiles/files/venogavanemikux.pdf
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160812bf08ca97---23844176972.pdf
- https://stehovani-ostrava.cz/static_pages_files/file/dewidaw.pdf
- https://dgaspcsm.ro/ckfinder/userfiles/files/79752238526.pdf
- http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd161ce5dc---65977445290.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=jungkook+and+rm
- 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 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00017a14.binf453ea4b670a7665a999be156b7fb9a120a76802d039b4eb15f8f458a72757ec |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17A14 | 10240 bytes |
font_01_sfnt_off000190d1.bin2692517d5dea3635d2f027e98b139e5c75f37eb77ac11218c2ddcb2db1f0f334 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x190D1 | 32260 bytes |
font_02_sfnt_off0001d0fa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D0FA | 16792 bytes |
font_03_sfnt_off0001e908.binfcdb85a80a9e45d7134d1f63de50f05114872148345c237107e86b096e37fff0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1E908 | 16860 bytes |
font_04_sfnt_off00021a55.bine456fec5953656cc52705a962b681d07ac9180ff0253770264bd8da0e8caf90b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x21A55 | 16316 bytes |
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