MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and a machine learning classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised WordPress upload directories, a common technique for hosting malicious content. The embedded URLs, such as the one on 'brusroom.com', are likely part of this malicious infrastructure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/9caab60ffa24a14eafd347cec3f48575/tisulodamuvo.pdf In PDF document text
- https://martabaktelor.com/contents/files/15643163533.pdfIn PDF document text
- http://maciejabramowicz.pl/upload/files/file/verirodag.pdfIn PDF document text
- https://giga-tronics.com/userfiles/files/jusonamiz.pdfIn PDF document text
- http://belv.ru/userfiles/file/durav.pdfIn PDF document text
- https://thai-airpark.com/ckfinder/userfiles/files/namekapo.pdfIn PDF document text
- https://erdenetpost.mn/userfiles/files/1925050089.pdfIn PDF document text
- https://stpm-sa.com/userfiles/file/bozedujufojofarubenomu.pdfIn PDF document text
- http://tianfonmm.com/d/files/manuj.pdfIn PDF document text
- https://congchung7.com/upload/file/84047036299.pdfIn PDF document text
- http://pro-customer.de/userfiles/file/46367584203.pdfIn PDF document text
- http://maschimaurizio.it/userfiles/files/1250180223.pdfIn PDF document text
- https://kamhosting.nl/ckfinder/userfiles/files/lesin.pdfIn PDF document text
- https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/ae070d9aeba1b2e382d2145a51e11a54/sorarivabawatubipizix.pdfIn PDF document text
- http://giaexploring.it/userfiles/files/66362676240.pdfIn PDF document text
- http://asu78.ru/userfiles/file/sajulunavogukewomi.pdfIn PDF document text
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161403a33273b9---24838121722.pdfIn PDF document text
- http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16134db179f8e4---55016400294.pdfIn PDF document text
- http://hz-kontejnery.cz/ckfinder/userfiles/files/30289405933.pdfIn PDF document text
- http://suphammamnon.org/uploads/files/pejomeduw.pdfIn PDF document text
- https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161470959d0fa3---78637013001.pdfIn PDF document text
- http://nuovartea.eu/userfiles/files/43387296219.pdfIn PDF document text
- http://spharma.ua/files/file/bomiwipixikatibadufom.pdfIn PDF document text
- http://tiszaladany.hu/upload/file/70092913101.pdfIn PDF document text
- http://herbwaterthailand.com/userfiles/files/voxoxuxozeg.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=mod+grim+soul+dark+fantasy+survivalPDF link annotation
- 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_off0000e559.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE559 | 20128 bytes |
SHA-256: 2701466ee5a9ec2e04f048b6315b5a4c3d3b0823359671ed892207590456c080 |
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font_01_sfnt_off00011a6a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A6A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013281.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13281 | 10928 bytes |
SHA-256: 0f6ec536a2475d4fccc063ff37543fb65ae9311e879e92130026989170581d9d |
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