MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains numerous external URIs and links to compromised CMS uploads, suggesting a phishing or malware distribution attempt. The presence of embedded URLs and the overall structure point towards a spearphishing attachment attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://allytemp.ru/uplcv?utm_term=download+chromebook+recovery+image
- http://heritagecarletonplace.com/clients/c/c2/c23aa4fb54f25340752d20cfcff880b2/File/14287691714.pdf
- https://energooptima.hu/upload/File/90681278877.pdf
- http://driver-jazda.pl/upload/file/zoniketos.pdf
- http://www.yoko-ono.be/images/userfiles/file/72317354027.pdf
- https://satybharat.com/ci/userfiles/files/tiwikipavujisezon.pdf
- http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608dafc7be85f---xesigedexirilisexewemukij.pdf
- https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/v6qjnedoaohi6612v2v1lf7bs1/57896890631.pdf
- https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/rnt9knn9j05rjlhrf6ght096da/1577587510.pdf
- https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/afadeaced1eaa230202fbf318be961b9/burizemufafe.pdf
- https://mimpishio1.com/contents//files/76137141993.pdf
- http://staples1981.com/clients/b/ba/ba027a536d51c1d997ee76cae6dc9017/File/lamozusatojurixat.pdf
- https://www.deuba.info/wp-content/plugins/super-forms/uploads/php/files/6bm3rr49ch6csnfm3k1b2spjkc/pozabamibegobafax.pdf
- https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbf906438b1---66810723053.pdf
- http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ae40e723cb4---55816023589.pdf
- https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c6c770ba15a---4630750384.pdf
- http://bobhendrix-law.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/torelula.pdf
- http://sahamit.net/userfiles/file/50048095755.pdf
- https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160786799710a7---87832835640.pdf
- https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/2205b3c90dc5a8cd552a772ecf410af1/sanebipomazemotefa.pdf
- http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d835b364e5---wejutoziven.pdf
- http://asbufestival.com/uploads/FCK_files/file/14017272210.pdf
- https://hfdjet.com/wp-content/plugins/super-forms/uploads/php/files/5e19eeafcbe221f9c0f389f734856dea/49943833477.pdf
- https://geya99.com/ckfinder/userfiles/files/7287139741.pdf
- http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ac99fbeb8d4---vetewerilunasites.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_off0000f35f.bin49f671224d867d5b29d610203f27392d4441e514869206f983abab3418e3ca59 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF35F | 11052 bytes |
font_01_sfnt_off00010cac.bin4d6cc790d55b95d12997f5beac5fae707381b4b6b109c9b9f35598e327a04ac8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CAC | 17436 bytes |
font_02_sfnt_off00013a5e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A5E | 16792 bytes |
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