MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links, many pointing to disposable domains or compromised CMS uploads, indicative of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of external URIs and link farm heuristics points towards a tactic of directing users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9879
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://nomylo.ru/uplcv?utm_term=the+long+house+1957+full+movie
- https://cuichi177.com/uploads/files/202109160933375440.pdf
- http://vnationwide.com/userfiles/files/sajapavowimijogejo.pdf
- http://sevinctekstil.com/resimler/files/runexumetamefavopipu.pdf
- http://rideco.hu/upload/file/timetof.pdf
- https://vibangthuaphatlai.net/uploads/files/92529472084.pdf
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161350dfe46fad---bedenolure.pdf
- http://elcivan.com/admin/UserFiles/file/vifarowusitarulax.pdf
- http://yuanjiangchem.com/upload/files/90766016306.pdf
- http://sakuragiramenandsushi.com/uploads/files/76896246615.pdf
- http://gocchame.vn/app/webroot/img/uploads/files/didibasijamamimotimir.pdf
- https://bellcera.60km.com/upload/files/72014990703.pdf
- http://www.bandungmesin.com/file/nevolenujekokux.pdf
- https://oriontradecom.com/ckfinder/userfiles/files/51017559974.pdf
- https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/qqskq50nkbpusn7phlsoqbni5o/17831582102.pdf
- http://kingbikeonline.com/images/upload/File/44632108671.pdf
- http://caudafotografia.com/userfiles/files/xupibuxijazuke.pdf
- http://siblom.ru/files/upload/file/zubikuxif.pdf
- http://travellightnepal.com/userfiles/file/82870111137.pdf
- http://goksirkrupskimlyn.pl/img/upload/files/23710962279.pdf
- http://pozitron-s.ru/userfiles/file/fuwafuliguvevagi.pdf
- http://permagnet.com/upload_files/file/210914042140087971xffdk3.pdf
- http://tachikawa-derma.biz/ckfinder/userfiles/files/zewuzewadafajipufig.pdf
- https://ost-fogging.com/upload/files/matalowesexurenob.pdf
- https://usgcambodia.com/userfiles/file/bawubapiro.pdf
- http://abwcrainhwy.com/uploads/files/dabuzawogikesimon.pdf
- https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/161319a8fb981f---nukaxojuzopes.pdf
- https://lomasdelaweb.com/userfiles/2008.09/file/litesoxilunesifodudike.pdf
- http://ecogestval.com/userfiles/file/pidosuzokivakikep.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_off00011428.bin5c6ce72a1f0bfe5b891cc19476a5af942f60a71c89691c368d6f0b4f9bc9fb02 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11428 | 10832 bytes |
font_01_sfnt_off00012d1d.bin717ccbb1f05fa22ba7dfc0815e0dbada405cbf95784422e5d42ffe6225ff9174 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D1D | 17328 bytes |
font_02_sfnt_off000159fd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x159FD | 16792 bytes |
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