MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous URLs that form a link farm, likely intended to redirect users to phishing or scam websites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this, suggesting the use of compromised or disposable hosting for malicious redirection. No scripts were extracted, but the PDF structure itself facilitates the attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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://synerhu.ru/uplcv?utm_term=seed+treatment+with+biofertilizers+pdf
- http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/3923d8a3a0f94ee59d00c7b68ed9a9e9/56947620361.pdf
- https://organicfertilizerproduction.com/d/files/82139759324.pdf
- https://expobar.vn/app/webroot/files/images/pages/files/dokexomafif.pdf
- https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/qfb3maed92u930dvrnp5ig7bo4/83711986712.pdf
- http://iphysiology.ru/upload/46396064325.pdf
- https://cortopolis.ar/userfiles/file/lemugoxovebofifupiput.pdf
- http://pantryscan.com/123cars/imagefck/file/426826500.pdf
- https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/b312fa8b76ab409dedc998a34c20aa57/tunokoxoxogamovimaneto.pdf
- https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/mp6vlhi82imbgss9tdb8fd6aq7/51824805332.pdf
- https://a1-recruitment.fr/v2011/Files/fck_upload/file/talubod.pdf
- http://aucoindeshalles.com/menu/file/73966373631.pdf
- https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a155f11b9a4---fuzafakisumiga.pdf
- https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/fvn04a1u7324im7uvb6qnv5mt1/83985870698.pdf
- http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/160abe6f365df0---58879887609.pdf
- https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/5090cf353eed52b808dc54d80fbf953d/meduxarivolovokumosetal.pdf
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160715302593ff---44992153237.pdf
- https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a8de32f0655---lidunizaposapowewal.pdf
- http://fogathajtohirek.hu/fckfiles/file/56007267858.pdf
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160aec56261eb5---96536043365.pdf
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/20gnsd2m8lukseehqcdd5fkfj0/11817711269.pdf
- https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/lvrqsqq6k1ribn5dd7dgud9k24/sadunufep.pdf
- http://sevoir.hu/uploads/file/12064914843.pdf
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/fa31f3f298ceec7282bd60f4b1ee73c8/ketuxarube.pdf
- https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/q0vvlhtt0nks23tv3mdp0jq1q3/vugasexaligoreniwebexasoz.pdf
- http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ad4bcd01b09---6312721501.pdf
- https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608116b71d2f4---xufiserimuxerezuvibu.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_off0000fcf9.bin52e8f7d6022ad4fb7c6a6bb596285988f809cbf7669cf92a1a70ab78252eac3a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFCF9 | 17476 bytes |
font_01_sfnt_off00012a8b.bin998a71617dd7222e570095a34eb5d09fbcdf4084768f188f31c3d14bb07f8376 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A8B | 11124 bytes |
font_02_sfnt_off00014424.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14424 | 16792 bytes |
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