MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains multiple links to external websites, many of which are hosted on compromised CMS platforms and appear to be part of a link farm. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and a high ML classifier score indicate malicious intent. The document body is heavily obfuscated, but the heuristics suggest a lure for downloading files, likely to deliver a secondary payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9895
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://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/1465ee0a6f25f503a478b76a5bcf49c5/24948279658.pdf
- http://lowchens.org/userfiles/file/34019168426.pdf
- http://chiengthai.com/file_media/file_image/file/puniduwesewakafagan.pdf
- https://itacademyindia.com/ckfinder/userfiles/files/gebilikuvoxewexebiv.pdf
- https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/fc598760ce2e10f9ef8c686a13d36899/60248888872.pdf
- https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/8676b81717a7a82751b28ab2e37ae44a/vulesajotiro.pdf
- http://blissrenewbeauty.com/newerac2c/userfiles/file/59592210132.pdf
- https://stef-nancy.fr/upload/document/39096612251.pdf
- http://mesterek.net/tmp/43482107734.pdf
- http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16089b222dd0a3---89728737672.pdf
- http://ed-web.cz/userfilesfile/85972546930.pdf
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608752674a3e5---23863952704.pdf
- https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/0fimo06eg4m9bt3sg4b1ggnii2/titaga.pdf
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d344f00d4f7---dirasax.pdf
- https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/cd5528b505181d13b093330782f70c7f/tibotalenisaguxip.pdf
- https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a24ba598cad---38916185044.pdf
- http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb60f82b5a4---23983201600.pdf
- http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608734e847255---14905331962.pdf
- http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c1be2653a39---mulefodigob.pdf
- http://lynhuagiasi.com/Images_upload/files/gubolirizawixures.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=download+minecraft+pe+for+pc+full+version+free+offline
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0002745e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x2745E | 16792 bytes |
font_01_sfnt_off00028c75.bin00ca289c0588693a55312090b61f76e681bb9d54266eb26c21919293f435c915 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x28C75 | 11036 bytes |
font_02_sfnt_off0002a622.bin7ccfed3f12b206c7ec0c3e1e311a6e071c97c63bcdc9a3e45123f8e9ffdbf279 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x2A622 | 21708 bytes |
font_03_sfnt_off0002ddde.bin97db07c38f9c6fd44afc6a0f64b1012090794cb8449aa31cc7a307edde00e69c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x2DDDE | 9512 bytes |
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