MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised websites and disposable hosting, likely serving as a lure for phishing or malware downloads. The presence of multiple compromised CMS upload links further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/a0a115c7408f8e5b7e5b75e22ca8b676/74949013236.pdf
- http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec7c871364---zilusodapobone.pdf
- http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606d6bba33a3b---52311153426.pdf
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/ntfarfdbdd77j34mvl0p9eci3e/nagujonoxararefokuzedezon.pdf
- http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071169600549---50558971355.pdf
- http://bwc.lt/i/11058823615.pdf
- https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/opg58oaqd4bbicku91g5d289mn/benoxupewokek.pdf
- http://primaneighbors.com/userimages/dumapawunuguxakal.pdf
- https://istanbulbalbir.com/upload/ckfinder/files/1992055643.pdf
- http://angarakshaksecurity.com/userfiles/file/52066907085.pdf
- http://cephedanismani.com/images/pages/file/vedunipuvakatatitupif.pdf
- https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/8908v1k85aekg43bq7drs5uok9/rodapedefof.pdf
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f28ffe18bb6---duzesorofamidigonuvip.pdf
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1c84aafe14---32752562840.pdf
- https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/5c4f6ce365e54d03fe4ff595bf29467e/folopapemuviponizexora.pdf
- http://thaide.org/userfiles/file/82696998368.pdf
- http://rc-modeller.se/images/file///85451030821.pdf
- http://zatexpress.com//upload/userfiles/files/bigovonoponejorixagabo.pdf
- http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/160827596063e7---45508926978.pdf
- https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/pcoauc22olr7e5n0gng01ba889/pibedovepipa.pdf
- https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/6skmqlju0jfqilpnjgh2knc252/biwaguweke.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=case+study+of+student+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_off0000e652.bin4e389a1664af5a2f6ab9fe5bfb4122ebc41672879d5c3edc19ab37e3ec0c0bd4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE652 | 17196 bytes |
font_01_sfnt_off00011350.bin1f35c00f0d1562da33c3dce65bf9c97633c885eba18b1ffc21b3931e56441120 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11350 | 10500 bytes |
font_02_sfnt_off00012b65.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B65 | 16792 bytes |
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