MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The ML classifier strongly indicated maliciousness, supported by heuristics identifying a link farm hosted on compromised WordPress sites. The PDF contains numerous URLs pointing to these compromised hosts, likely serving as a distribution mechanism for further malicious activity. No scripts were extracted, and the document body was unreadable, but the presence of a link farm on compromised infrastructure is a strong indicator of malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9935
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 http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d9189e48b36---xuxolir.pdf In PDF document text
- https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/89d379e1bf986dfff30f5c77e8274eb6/48009571754.pdfIn PDF document text
- http://opakowania-loga.pl/zdjecia/fotki/file/38840254397.pdfIn PDF document text
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f852d79ce0---26071470861.pdfIn PDF document text
- https://cape-electronics.com/media/file/dexuvo.pdfIn PDF document text
- https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160827f4ac6e98---rukexudigefimuduv.pdfIn PDF document text
- https://thehideawayresortpattaya.com/userfiles/files/fexelesinux.pdfIn PDF document text
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160c1131453731---96230274694.pdfIn PDF document text
- http://naturalmis.com/userfiles/file/jukogirosogipudog.pdfIn PDF document text
- http://erex.hu/upload/file/xininalalipojojupopite.pdfIn PDF document text
- https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/820694e6e0f16db511a34f7775b0dd6d/worunoz.pdfIn PDF document text
- https://bwawarszawa.pl/upload/file/nurowuw.pdfIn PDF document text
- https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b07552e8a7---33897395612.pdfIn PDF document text
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160973040d1a7b---16624015950.pdfIn PDF document text
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607f2fcb1c847---25129353653.pdfIn PDF document text
- http://lycee-elm.org/userfiles/file/58651176133.pdfIn PDF document text
- https://capital-tic.com/upload/ckfinder_temp/files/20210625203320.pdfIn PDF document text
- https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/af6249ec5189a27ff12a0c2276567971/nujekusubelavekupatemuwib.pdfIn PDF document text
- https://edcasys.com/ci/userfiles/files/6184150397.pdfIn PDF document text
- http://midel.me/userfiles/file/jivexatogedaw.pdfIn PDF document text
- http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160cd10e5e18b4---gemamutajajimexuwu.pdfIn PDF document text
- https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/7a388505g055qimadasdhl40l5/kusimuguxetasovavaz.pdfIn PDF document text
- http://solamsys.com/userData/board/file/kuvowoxedexez.pdfIn PDF document text
- http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160708cb574c45---gonojusijamipevet.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=new+thought+philosophyPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010d69.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D69 | 17336 bytes |
SHA-256: d6513502adcacbdfd04478e8963294d5cf5fa0de4a2948c16db57b7b73b0c880 |
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font_01_sfnt_off00013ac5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13AC5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000152dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x152DC | 10440 bytes |
SHA-256: 4fe5f037465f09fa53884cf2b4a688908465638d63585c41df006067472bd00d |
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