MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous embedded URLs, many of which point to websites that appear to be part of a link farm. Several of these URLs lead to compromised WordPress upload storage or are hosted on disposable domains, suggesting a tactic to manipulate search engine rankings or distribute malicious content. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://chcial.ru/uplcv?utm_term=how+to+get+back+contacts+after+factory+reset PDF link annotation
- https://heritagecambodiatravel.com/userfiles/file/nenepafapujag.pdfIn PDF document text
- http://nayyaralidada.com/alpha/ckfinder/userfiles/files/52569696117.pdfIn PDF document text
- http://scro.ru/pic/file/1745944643.pdfIn PDF document text
- http://auto-rad.pl/userfiles/file/549457318.pdfIn PDF document text
- https://www.nvsrolko.org/ckfinder/userfiles/files/94676266597.pdfIn PDF document text
- https://strongpointmarketing.net/userfiles/file/diguvixajuxeran.pdfIn PDF document text
- http://ketoanaca.com/uploads/image/files/jusipuluninetififijonomij.pdfIn PDF document text
- http://zjhywt.com/images/upload/File/19981185213.pdfIn PDF document text
- https://sikanderajam.com/Robinson/ckfinder/userfiles/files/51354214176.pdfIn PDF document text
- https://cplastik.com/data/cms/file/4680200153.pdfIn PDF document text
- http://www.pattyn360.com/upload/forum/files/11618563761.pdfIn PDF document text
- http://www.mueblesgamez.com/ckfinder/userfiles/files/vasofubedafibalop.pdfIn PDF document text
- https://xn----8sbcehyodmtf1czh.xn--p1ai/userfiles/file/bixaz.pdfIn PDF document text
- http://zaintik.org/files/galeria/files/sininaruwidebizadunut.pdfIn PDF document text
- http://gerd-pollak.de/userfiles/file/74732310375.pdfIn PDF document text
- http://insfilings.com/skyzone_classic/upload/files/1262488829.pdfIn PDF document text
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/161320ad5c79d7---tavodikololoxiwewen.pdfIn PDF document text
- https://grancom.by/upload/docs/mepuwuxowavikejevifipo.pdfIn PDF document text
- http://lobi.md/userfiles/file/17181358176.pdfIn PDF document text
- http://holidayservicemarsala.it/userfiles/files/90195414240.pdfIn PDF document text
- http://salt17.com/userfiles/files/siruki.pdfIn PDF document text
- http://yas-center.ru/userfiles/file/nisupapumobubu.pdfIn PDF document text
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161419aae0c7ad---zonifikozetome.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613342a01cd45---gerefabobopodawat.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_off0000afa3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAFA3 | 10796 bytes |
SHA-256: 4dba078a60ba0d9c4605ed6e6572970cf5a1ba90189085c860d6196b57b6be60 |
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font_01_sfnt_off0000c8c5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC8C5 | 14500 bytes |
SHA-256: 72c87333cecb31d3efbc97d0531e999b6d1b486551ae2fabb5b19b91be82228e |
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font_02_sfnt_off0000ed1b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED1B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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