MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites and disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, but the presence of many external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly indicate a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://cructi.ru/uplcv?utm_term=3+world+country+meaning PDF link annotation
- http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d4cd4f4d8---pofun.pdfIn PDF document text
- https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a3d728ce77---busoxazod.pdfIn PDF document text
- https://hcviet.com/img-phuctri/files/luzadowebedi.pdfIn PDF document text
- http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160865ab34608d---1916934159.pdfIn PDF document text
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/ddfc4de87323e818aacf37df1cc97088/87201735289.pdfIn PDF document text
- https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/7919975763a0506e156ce8aa53deb2ee/19927993089.pdfIn PDF document text
- http://extrastyle.ee/ckfinder/userfiles/files/dijakakodawajikij.pdfIn PDF document text
- https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/1q47l9jd87f8659s546v326h1b/71397020217.pdfIn PDF document text
- http://polimak.pl/userfiles/file/5559565050.pdfIn PDF document text
- http://thanuyentea.com/ckfinder/userfiles/files/61272749593.pdfIn PDF document text
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/ll8p46nikffrn01vg8quqspms6/dusisogu.pdfIn PDF document text
- https://mides.vn/images/ckeditor/files/17729102819.pdfIn PDF document text
- http://logansport1971.com/clients/4/42/424235dfd0fdcd2d3cc2afd1e16bb83e/File/71822390555.pdfIn PDF document text
- https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609447744274d---39214889423.pdfIn PDF document text
- http://dailyxedayhang.com/userfiles/files/41500929220.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/f4bb868bb7da3ee7fc5f23cfd21dcc77/vowiwudepabu.pdfIn PDF document text
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160853ac85abed---wijujetunib.pdfIn PDF document text
- https://groupunsur1.com/contents//files/makamakaxovezo.pdfIn PDF document text
- https://abe-rdc.com/userfiles/file/masetubuzazefosutiwir.pdfIn PDF document text
- http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609c1497494a4---xukutefi.pdfIn PDF document text
- http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/554a75ae3cc4bb84055b1ded916fa2b8/86009087939.pdfIn PDF document text
- http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608a5b8facd36---vovuxagapetifa.pdfIn PDF document text
- https://5a.ro/ckfinder/userfiles/files/5723080482.pdfIn PDF document text
- http://agriturismofattorialucciano.it/ckfinder/userfiles/files/sakoneferinuf.pdfIn PDF document text
- http://partner-support.net/user_data/userfiles/files/wafuranenififolomabover.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_off0000f43a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF43A | 10920 bytes |
SHA-256: 5332fd5d53cd2b33293534369bf71e8376b17b133f11bd7ae674490e2708b124 |
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font_01_sfnt_off00010d52.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D52 | 17068 bytes |
SHA-256: 15db735f028917d7e00d559dd8012b67a630bbee94be9dcdfaa37d66a7f3c30a |
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font_02_sfnt_off00013969.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13969 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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