MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The ML classifier strongly indicated maliciousness, supported by heuristics identifying the PDF as a link farm pointing to compromised CMS upload directories. The document body is unreadable, but the presence of numerous URLs, many hosted on compromised WordPress sites, suggests a phishing or content distribution scheme. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
Heuristics 5
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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.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/e33d093e67dda8ef2b6b34080cf2e6db/85328881241.pdf
- https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160bdae33e381d---xedagijirevafol.pdf
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ec436aa60ed---mewawosokes.pdf
- http://rideabikenews.com/user_img/files/juwanavamaverekotajufisus.pdf
- http://architettotoma.it/userfiles/files/tifijidiwovibejisedozulot.pdf
- https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/14d4d3a84c3dc4d53be29aac159cec9f/dukilefexuvukajep.pdf
- http://quickvideo.nl/userfiles/file/fabisepiwegilone.pdf
- https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6af0a3090---61505756155.pdf
- https://amenajarisiconstructii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5d306531a---13248039497.pdf
- https://traonguoc.vn/wp-content/plugins/super-forms/uploads/php/files/9maggj6oi030pgv18m66c5v2cc/vadowi.pdf
- https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/1b291c20ffb5a0790fb5a0b72521674e/63885822318.pdf
- https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/2675hqufpm5rr1hlcfp0p26bm6/61296221867.pdf
- http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070db0935172---90122205853.pdf
- http://analogsys.com/uploaded/file/196955641760913173be706.pdf
- https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/hakdgfk3ql9erru1p7ku3fke62/fimenemukari.pdf
- https://pet-fashion.ro/mm/file/vilapoduberurux.pdf
- http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160820ddf10940---pesaliwafosotovitufomim.pdf
- https://yucekalipmakina.com/tsrm1/img/userfiles/file/86778383806.pdf
- https://crownprolaw.cn/userfiles/Proj_Name//files/73457809418.pdf
- https://xn--arbeitskndigungsrecht-best-5zc.de/userfiles/file/sapubiret.pdf
- http://johndanton.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/24278907702.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=canker+sore+tagalog
- 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_off0000bcfc.bin2bbdb71b3ac8315f8199063a8f5e7ec5034f2185ac9a68a99da102fa3adb0b23 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBCFC | 16548 bytes |
font_01_sfnt_off0000e827.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE827 | 16792 bytes |
font_02_sfnt_off0001003e.bin727956feab9855f28fc88f9bc7dbf31b6ae2660adc9b63790d370c8643cb329b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1003E | 10312 bytes |
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