MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains multiple links to external websites, many of which are hosted on compromised CMS platforms or appear to be part of a link farm. The heuristic 'PDF_RANDOM_URL_LINK' specifically points to a suspicious URL that likely hosts a secondary payload. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 7
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://alexandersorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/luwuvuzowoku.pdf
- http://toyotacri.com/userfiles/files/moroliza.pdf
- https://taiwancy.com/app/webroot/userfiles/files/22035263827.pdf
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/9g1107h6qudp0do1754om363g5/lilunawaloraremodi.pdf
- https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/cacd03aa78a7c4fa18e3ed9d43a6f0f4/rotanilofa.pdf
- https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/16076599c7c578---11577924228.pdf
- http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f5d9ee114---37120319408.pdf
- https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/6a9ef5707cf6f3ae4a201e8dc21ae460/neralumuwi.pdf
- https://marigabung.com/contents/files/54038486004.pdf
- https://aglogistics-bo.net/userfiles/file/tadapugiraz.pdf
- https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/2e916c737c320dcd53914ab48d08e894/33938676392.pdf
- https://iominneapolis.com/wp-content/plugins/super-forms/uploads/php/files/3cb9d9bbfeeff48d29427a28f69790f6/67245745292.pdf
- https://ludifrance.fr/userfiles/file/22443227605.pdf
- https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/30919438b4efdef2984ff1532ef57f41/1611531664.pdf
- https://espiber.cl/images/uploadedimages/file/davegavasidoru.pdf
- http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16116e671b73e9---64543305077.pdf
- http://stphilomenaonline.org/userfiles/file/21816623039.pdf
- https://embassyinvietnam.com/webroot/img/files/julawezomeralosurinawek.pdf
- http://longarmquiltacademy.net/fckeditor/userfiles/file/60817113410.pdf
- http://handsonmontessoripk.com/userfiles/files/diwifimibolitekumazuwip.pdf
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160f6ae0ef1af0---xixitivurasefikaw.pdf
- http://rollfactorytogo.com/uploads/files/fiwarotemepufilizerisod.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=computer+security+tutorial+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_off0000b935.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB935 | 16792 bytes |
font_01_sfnt_off0000d14c.bind70d82abb12f01b9f113e25458dfdc3ac67f28a133386d67f6a14ef1137186a2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD14C | 10924 bytes |
font_02_sfnt_off0000eaae.bin8247976d30a3f64182140d4674319e25cf6376fc496d7eeded51be3153ba5b9a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAAE | 15976 bytes |
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