MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this. No scripts were extracted, but the overall structure and URL distribution point towards a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://philabc.ru/uplcv?utm_term=a+loss+for+words
- http://yey.uw52.com/upload/files/nalejemuzagip.pdf
- http://www.eau-msu.ru/ckfinder/userfiles/files/86656595288.pdf
- http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/161300d611b4ac---lilironijodunugurojirixas.pdf
- https://botroul.be/uploads/16692289097.pdf
- https://melz-feu.ru/upload/sinilowitorefan.pdf
- http://www.elstar.ru/uploads/files/gadenonirabelivuxinika.pdf
- http://becskeicsodajo.hu/admin/fck_upload/file/20176980157.pdf
- http://congseng.com/uploadfile/files/nuvezoxaxefo.pdf
- http://liceoadultos.juniorcollege.cl/userfiles/files/rumogarujunemetazifekat.pdf
- https://www.ojchamber.com/ckfinder/userfiles/files/89329286720.pdf
- https://hsdinstruments.nl/uploads/files/dexiwugisebowejex.pdf
- http://harringtonassociateslaw.com/Test/JabzMedicalBillingService/userfiles/file/93081032206.pdf
- http://generale-bureautique.fr/gdb/files/file/didar.pdf
- http://tdbakademi.org/userfiles/files/80810277900.pdf
- http://noavarservice.com/ckfinder/userfiles/files/66384518316.pdf
- https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1615107ab6173c---rabiguvasalejavowuzew.pdf
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/7e7d1be3a40f1af97ade1f500603b7ea/17223829412.pdf
- https://aokman-drive.com/d/files/fenin.pdf
- https://studioconcept-stand.com/fck_userfiles/file/79416030919.pdf
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613d410d5f150---puwinemojenatugonubawepu.pdf
- https://stopserv.ru/files/file/33177811112.pdf
- https://webdatedepot.com/userfiles/file/21580004621.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_off0000ad36.bin559bfb3240db2dde099610ba45655722c2426820c4938e89d88928dedd4be6a2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD36 | 14520 bytes |
font_01_sfnt_off0000d171.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD171 | 16792 bytes |
font_02_sfnt_off0000e987.bin69e40fdc52ff6fb513583a2a56f8308451b3da00a39a36bacf8cd90357ef623c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE987 | 9828 bytes |
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