MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a link farm with numerous URLs pointing to potentially compromised websites or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using such links for SEO manipulation or to host malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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 http://optikametuje.cz/userfiles/file/17886493878.pdf
- https://zlatartopalovic.rs//files/16325288367.pdf
- https://abofahed.com/userfiles/file/99484446607.pdf
- http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/ml035bahgspu3p6lk1fauuv4n0/rizefesubivuwaxonejudu.pdf
- http://rentbucharest.net/images/userfiles/52222139301.pdf
- http://chi-kara.net/userfiles/file/rebunurizewatofudesevol.pdf
- https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/9c2aa4637f794ba0b30bbe482a071cc4/jelerinobusipasuvutiguli.pdf
- http://agierresrl.it/userfiles/files/velelamidodadi.pdf
- https://avflash.nl/upload/files/32708763296.pdf
- http://santeh.md/img/files/dizilupab.pdf
- https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/56v884hvgmm516ln6mu9j9scqk/vinagamozixol.pdf
- http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608882885075a---sagezaviraviwumar.pdf
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/1fc6cbbb8d41112977a1ba30ce7d2ac0/fomozovagomikoseguporek.pdf
- http://gitishahjahanpur.org/ckfinder/userfiles/files/8768886804.pdf
- http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607747c22553c---roporuzekanozevemikiwer.pdf
- https://yz-yongzhong.com/upfiles/editor/files/bobopalozipepagijojutik.pdf
- https://acrgroup.nl/userfiles/file/tidis.pdf
- https://dynasty888.com/image/files/20210615_085504.pdf
- http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e29cad5def1---zuluvo.pdf
- http://olympusflights.com/files/files/57860745528.pdf
- https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160860dc73dcc8---49203265510.pdf
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1612dda5421bd5---22679683307.pdf
- http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160775bda197e7---50437388506.pdf
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/o26a9imib5jjst33bvp105tk14/mabiwivaravufotufo.pdf
- http://geombiagioschettino.eu/userfiles/files/lakiluduwiloxedit.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=folk+songs+guitar+chords+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_off0000de4f.bin0607afd7826b34a693f914fcaeee08e95c2ed5bf2782494677001d175fb9e1f4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE4F | 10936 bytes |
font_01_sfnt_off0000f762.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF762 | 16792 bytes |
font_02_sfnt_off00010f74.bina5ebcaa1254541245056ce00dc5a201c35ee5c08d8609c984d1b1ee87209444e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F74 | 17476 bytes |
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