MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting it functions as a link farm to distribute malicious content or conduct phishing attacks. The presence of multiple distinct hosts and UTM parameters further indicates a deliberate effort to obscure the final destination and potentially track user interactions.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://smidgel.ru/uplcv?utm_term=how+do+you+play+mastermind
- https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608f85327c459---batewo.pdf
- https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/94efe546160e1ff83531d453dc919fd6/zoxevazaxinupo.pdf
- https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e35c884c95---38801818283.pdf
- https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/34f3f2fcc4803abba6d3f849b31cbf53/keloru.pdf
- http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5420a437a---malofew.pdf
- http://martonaroniskola.net/userfiles/file/sojikapiwozijokivanomu.pdf
- http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c0ab09d394a---68263984353.pdf
- https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/3273e8c4ad480053e0af3ae3291f3587/reboxu.pdf
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075a50246ea4---18822870416.pdf
- https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/612dc114c39849b6f45fd743ed595cec/79158767756.pdf
- http://techniq.ae/admin/uploadfiles/file/7690871353.pdf
- http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606fca05b6151---famusixi.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2510cdbdb1---43609347003.pdf
- http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/160c6a275b89c2---sodewu.pdf
- http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/ecfe621d6fd5eedacf0783ce4a552e98/vixinifujemilujadokata.pdf
- https://too.kg/wp-content/plugins/super-forms/uploads/php/files/7cdd794b9d9081382c786868f6b72601/76312245456.pdf
- https://alternativecarrepair.com/userfiles/file/koboraberapewoj.pdf
- http://happyland-nsk.net/ckfinder/userfiles/files/51523669630.pdf
- http://toyotarent.kr/FileData/ckfinder/files/20210624_ED9EB7C0D87E9694.pdf
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab9f2f2e580---rerewegakotusivejigaw.pdf
- https://autoroman-service.ro/imagini_ws/fazonovexorugadigapepa.pdf
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607450ae3b23a---pewibovam.pdf
- 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_off000194dd.bine03cf371927978a96e0de0b633dbd90dd4113c44b64bc9ebec9e5e05f4c08044 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x194DD | 10844 bytes |
font_01_sfnt_off0001ade9.bin5f1f4412dfab48d1973af197ca4884c6b39e3d3549bb676e5fe95bd574234151 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1ADE9 | 18116 bytes |
font_02_sfnt_off0001dcc4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1DCC4 | 16792 bytes |
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