MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. While no scripts were directly extracted, the nature of the embedded URLs and the heuristic firings strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://officialbacknumber.org/editor_up/52447340367.pdf
- https://istanbulbalbir.com/upload/ckfinder/files/dolofegabexujamogumab.pdf
- http://sbairs.com/datas/files/pimozadoxezujunikotef.pdf
- http://thaoduocvn.com/userfiles/image/file/87509050655.pdf
- http://cpviettin.com/upload/files/48285292877.pdf
- https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/475fa938e30544c5e39dbbd5651b6c8e/juwefonalenaxi.pdf
- http://ruihuitax.com/files/file/91337225953.pdf
- https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/161313eef3f52e---kuguvapenetegagijavomupaw.pdf
- https://cartolmania.it/file/xujazuleboribikef.pdf
- http://dogable.de/userfiles/file/gisiwakus.pdf
- http://logiccpacma.com/ckfinder/userfiles/files/22989285873.pdf
- http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612ecafe4502f---fatokutewaxutapozirar.pdf
- https://revive.fashion/upload/files/zetalijoxuropobofu.pdf
- http://cgemfoco.com.br/ckfinder/userfiles/files/21664813938.pdf
- http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612fd5211df4d---70375537098.pdf
- https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613af98960bc9---99542616406.pdf
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/07990dd2c293e586148e56ff8b1836c8/25208975340.pdf
- http://productinfo.in/konadnew/userfiles/file/70212709766.pdf
- http://gachtrangtritranvinhtin.com/gachtrangtritranvinhtin/Images_upload/files/pasifixaru.pdf
- https://termoformat.md/img/files/tirulikimoxiragapivofok.pdf
- http://tupnate.com/ckfinder/userfiles/files/79805675260.pdf
- http://xsjsbzrw.com/uploads/files/nuzufoxamuku.pdf
- https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f78063bbf6---votibixopixe.pdf
- http://badischer-kunstverein.de/ckfinder/userfiles/files/62460994015.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=android+game+ui+design
- 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_off0000fb71.bin6938ca63eeff131d8120c68e41789cefb9de52f622ea1c2be96eca5829459270 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB71 | 16760 bytes |
font_01_sfnt_off000126ce.bin903c032abd2b2753895282e2c43383f3d0ee61049b8cbef7bf2dbdb413ff6c8f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126CE | 10528 bytes |
font_02_sfnt_off00013e8b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13E8B | 16792 bytes |
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