MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains numerous links pointing to compromised websites, indicating a potential phishing or malware distribution scheme. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggests these links are part of a link farm on disposable hosting, likely to obscure the true malicious destination.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
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 http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077157ba4484---tijajegogilirujuvolojib.pdf
- http://congtyvima.com/images/Download/gafukotimat.pdf
- https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/463vfd5n3710dj9f1g0qkshnq2/14315335365.pdf
- https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/07bdffc7a7851108d22e38dd78fadaad/6454662177.pdf
- https://hashtag.school/userfiles/file/rowijukarikodojonepi.pdf
- https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/b6f678beef718bffd5e0434f8ac14949/55066748375.pdf
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/160748985befab---5417423322.pdf
- http://vipnjl.com/userfiles/files/vezasuvaronik.pdf
- https://flying-vikings.net/UserFiles/file/30271902924.pdf
- https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/0cbf932009b4de34683c7efb069f1847/6387646161.pdf
- https://enkaotomatikkapi.com/depo/sayfaresim/file/bakofusezofudesolos.pdf
- http://aucoindeshalles.fr/menu/file/14100667090.pdf
- http://floridare.ru/app/webroot/img/uploads/file/290005_11198162162.pdf
- https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/0f5a25cde75f058991a515709d9e2036/97128268652.pdf
- https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/c5af0ece3ec56ef706405cc24a4c03df/33547941732.pdf
- http://hcm-invoice.vn/hinhanh_fckeditor/file/somisuzelaxu.pdf
- http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e7212610eb---buniroz.pdf
- http://meble-tk.pl/userfiles/file/kunokerizido.pdf
- http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16098a0477fff7---35533075237.pdf
- http://ryouhurt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/24569612739.pdf
- https://nikosdimos.gr/userfiles/file/nizavurul.pdf
- http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161195e11c9f8b---93577850966.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=xbox+one+x+emulator+android
- 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_off0000e487.bin884223f079af53643ca11cc9aadfa64d4c5f1c54d09758cf480a3f8d92833c0b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE487 | 10592 bytes |
font_01_sfnt_off0000fc98.bin9a683dd85ffa7d1ef75223425f2bd635a7190fd0159cd9ba4ffe00f4b98e3b73 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC98 | 19236 bytes |
font_02_sfnt_off00012e2c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E2C | 16792 bytes |
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