MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains embedded JavaScript and a large number of external URIs, many of which point to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The embedded JavaScript likely facilitates the redirection to these malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://pistant.ru/uplcv?utm_term=verb+to+have+conjugation
- https://abofahed.com/userfiles/file/fixabowu.pdf
- http://1137.jp/app/webroot/js/ckfinder/userfiles/files/70046115967.pdf
- http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/16098328bd23d7---30455520123.pdf
- http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609757a7f23a0---40395735780.pdf
- https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/hp06nit2b1hsmru7t75dn21oei/febutupepebibagekoxatane.pdf
- http://mygotour.com/FileData/ckfinder/files/20210618_28070589D0ABA220.pdf
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/m99mii9gfr40vjqmneo2hjudk5/jowetuserazaza.pdf
- https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16095bb517a353---riwomobitabojetiteb.pdf
- https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/294875e5f83b8aa2a3b581f304e80a8c/jisapipikupujikoxetuk.pdf
- https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/14fdfdf76108b710446926b791477139/49978418681.pdf
- http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a22bca646115938607ed95377f3fd5de/46954346902.pdf
- https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/vdrfc0oemc2rb8s35lq5est8b4/tiwekuzoporujumulada.pdf
- https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/8c85910551b12acd7e085aab8a3a98dc/62657714023.pdf
- http://zap-interactive.com/uploads/files/bururirafajigunebit.pdf
- http://purofirstli.net/userfiles/file/kiviwiwata.pdf
- https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d49ec052cd---68520826848.pdf
- http://askort.pl/Upload/file/limamijodutoruditiwevebe.pdf
- http://longchimvac.net/app/webroot/uploads/files/23895592457.pdf
- http://archimax.ch/dynamic-images/cms/file/81525764687.pdf
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a970101ec---lenibutu.pdf
- https://ideylia.fr/uploads/file/66123227597.pdf
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/2nkh3dpb2tksnhuj7k09ht8vj5/lifawenekeruxukok.pdf
- https://mimpishio2.net/contents//files/77652203004.pdf
- https://aslplastic.com/ckfinder/userfiles/files/51233873033.pdf
- http://maility.pl_adresuserfiles/file/30390399611.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_off0000fdb8.bin7eed3291d5b0ffe727651448a6b669a19cbc851ce5a663f566598aa85153b0ce |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDB8 | 10700 bytes |
font_01_sfnt_off0001162e.bin3ae64c8fa38dbaa19d31eb41b71ee7695597d07d7cad5f7776d6ec26b44363d3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1162E | 17508 bytes |
font_02_sfnt_off000142d8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x142D8 | 16792 bytes |
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