MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which are hosted on disposable domains or compromised CMS uploads, indicating a link farm designed to redirect users to malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
Heuristics 6
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://synerhu.ru/uplcv?utm_term=letters+with+v PDF link annotation
- http://tahyuh.com/uploads/files/202109100145522288.pdfIn PDF document text
- http://rama-sp.com/rama/webroot/js/ckfinder/userfiles/files/46763299299.pdfIn PDF document text
- http://ledlight-lamp.com/mingyi/images/userfiles/file/vepuzulojuwi.pdfIn PDF document text
- http://dae-young.kr/upload/fckeditor/file/12473735999.pdfIn PDF document text
- https://hotelite.in/userfiles/file/fivoxufozaja.pdfIn PDF document text
- http://jyjwqj.com/uploadfile/file///2021091909252643.pdfIn PDF document text
- https://armenia4d.com/contents/files/zozuwulenokogofebolaparo.pdfIn PDF document text
- https://atarentacarburdur.com/userfiles/file/sulute.pdfIn PDF document text
- https://beyondpins.com/calisma2/files/uploads/xebumom.pdfIn PDF document text
- https://thefertilizergranulators.com/d/files/dekepulorafuzax.pdfIn PDF document text
- http://ayrh.internet-match.com/upload/files/91380346341.pdfIn PDF document text
- http://freetourscadiz.com/ckfinder/userfiles/files/bezuvimisibatofin.pdfIn PDF document text
- https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/e8ddabfa79997df99723920ed7fbf09c/gofukazipofivuxud.pdfIn PDF document text
- http://vtaky.sk/media/file/56212126410.pdfIn PDF document text
- http://ekorepetycje.eu/Upload/file/kawuzobewew.pdfIn PDF document text
- http://emke.hu/uploads/ckfinder/userfiles/files/rurelaloxavomut.pdfIn PDF document text
- https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/qetcp6d4vungqgr04ar0v77kvt/31271397821.pdfIn PDF document text
- https://radiosmile.hu/upload/file/nopoletumafovominad.pdfIn PDF document text
- https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/2a76c16757e977073d4c4c52e3699851/15530046604.pdfIn PDF document text
- http://artattack-concerts.de/files/file/totavuv.pdfIn PDF document text
- http://t-cso.com/upload/file_folder/file/fugoguzisebileloz.pdfIn PDF document text
- https://gulfcans.com/home/madarmun/public_html/gulfcans/images/bulk_images/files/67122701355.pdfIn PDF document text
- http://alphamarino.kz/images/news/file/61313365951.pdfIn PDF document text
- http://www.bash.cl/media/file/lopaxiruvupojuvovi.pdfIn PDF document text
- http://choinka4x4.org/cms/files/file/18637657079.pdfIn PDF document text
- https://vcubusinesssolutions.com/userfiles/file/88445944260.pdfIn PDF document text
- 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_off0000e431.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE431 | 18500 bytes |
SHA-256: f9b5cef74799c4c4e1e3db9d22d57cdfa3919149e33d8aea0e587de634237f0f |
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font_01_sfnt_off0001133b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1133B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012b51.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B51 | 9880 bytes |
SHA-256: e1e73c10e0eeee70976df43a781e446e70acdf9d0600c86986b26a21d9ffc3d5 |
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