MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous external links, many pointing to compromised websites or disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly suggest a phishing or trojan payload delivery. No scripts were extracted, but the structure and URL patterns are consistent with a phishing lure or a downloader for a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9959
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://laborke.ru/uplcv?utm_term=how+to+block+websites+on+chrome+mobile+without+app PDF link annotation
- https://marathonroller.com/userfiles/files/32000350310.pdfIn PDF document text
- https://roarmysecurity.ro/mm/file/34714941401.pdfIn PDF document text
- https://paroles-vives.com/ckfinder/userfiles/files/didimilusarazazos.pdfIn PDF document text
- https://elegune.net/files/galeria/files/98168713793.pdfIn PDF document text
- http://goodfortune.hk/UpLoadFile/file///16884514341.pdfIn PDF document text
- http://ipea.kr/userData/board/file/30640513614.pdfIn PDF document text
- https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/4n5ngvncn1ij8rgmjk4smoj6gt/lupitesupox.pdfIn PDF document text
- https://mysilo.com/upload/ckfinder/files/98317832937.pdfIn PDF document text
- http://uhy-th.com/image/upload/files/10061017395.pdfIn PDF document text
- https://truckforceone.com/upload/editor/file/wudonabunavifotupe.pdfIn PDF document text
- https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161382d4fbb020---18766026393.pdfIn PDF document text
- http://sgyscom.com/upload_fck/file/2021-9-25/20210925020856387320.pdfIn PDF document text
- http://gildiamasterov.ru/userfiles/file/xiwakanimolejutusupolame.pdfIn PDF document text
- https://ewastexperts.com/userfiles/files/88925820994.pdfIn PDF document text
- https://membermimpi.com/contents/files/wasesijojifuj.pdfIn PDF document text
- http://beiks.info/public/file/19139042836.pdfIn PDF document text
- http://bananamusic.tw/uploads/files/202109131257215411.pdfIn PDF document text
- https://nadrozmerne-sklo.cz/uploads/jizub.pdfIn PDF document text
- http://www.lircai.com/web/inline/file/35821973668.pdfIn PDF document text
- http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/cbae20e95c5372275655821b596b6160/raxovunefututinele.pdfIn PDF document text
- https://pepsima.biz/files/file/54563164674.pdfIn PDF document text
- https://ismart99.net/upload/files/97587042066.pdfIn PDF document text
- http://poliambulatorioargentina.eu/userfiles/files/dojireg.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_off0000aeb8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAEB8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c6ca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC6CA | 16228 bytes |
SHA-256: 950a55a2328f0913032dddc20f0ace935ee4574781ff3528e327e257e5a4d329 |
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font_02_sfnt_off0000efd4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFD4 | 11048 bytes |
SHA-256: 53eb19192bf5b6b9a130098a0d484b5b2462cd60b4a34cdfeb2d39483505cae6 |
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