MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities or delivering malicious content. Heuristics indicate the PDF acts as a link farm, pointing to multiple compromised WordPress sites and disposable domains, suggesting a phishing or malware distribution campaign. The ClamAV detection and ML classifier further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9928
Heuristics 8
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://changrung.com/ckfinder/userfiles/files/wibejilevalomorewiwetade.pdf
- http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099c91e2ea09---dexojidules.pdf
- http://nbpcpentecostalchurch.com/clients/65183/File/nuwulenoxogogevidukeve.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0e76df2f69.pdf
- http://garage-fuji.jp/js/upload/files/lixof.pdf
- https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c394a0c42e2---tukopedelop.pdf
- http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/19157169760a5dc2276255.pdf
- https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/9746c90df8f7a75cdb624af96d7c095f/retalulawozefubekikibaj.pdf
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080371460679---kipijadimuvuzawodejozun.pdf
- https://p87.hu/files/55552825047.pdf
- http://silesiacapital.eu/data/file/ravulisofogotikuxet.pdf
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d6d0be1f983---wariviv.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e9d483034f.pdf
- https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/dd3b01e7bde78e410deb25d74a586be5/xagifasaruxuleg.pdf
- https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/vhmutbotnegjacf2orahcltsv3/dosebesozuzekulagiluv.pdf
- https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/0d3b25bf69483337985bc4a53bd524db/wawuwamovosoledoxosamor.pdf
- http://easternsheep.by/app/upload/file/dazebikelixubosugoroz.pdf
- https://angkoronetour.com/userfiles/file/xexisufaxoj.pdf
- https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0a2f6f332---galupudasedivi.pdf
- https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/8a0173644ddf1f8ccf25870f3c0f3f51/tuvuxunopejelibemoxokig.pdf
- http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609359d007c32---xisebufik.pdf
- https://ropaalmayoreo.com/images/userfiles/file/77651603934.pdf
- https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/d266547d2ed4ad7f50bdcd4130b65bb2/75951777498.pdf
- https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/1632987d922f6cd04178cc838f83e169/25237167406.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=signs+of+listeria+poisoning
- 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_off00011a9e.binbee54cbb1b795a4b82f385234068b1b40cdd379eefede4e7ea133165648eb973 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A9E | 18496 bytes |
font_01_sfnt_off000149a2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x149A2 | 16792 bytes |
font_02_sfnt_off000161b9.binf25d74b04b8fe5e00d9df5b0874301debd02ff89b8b11c6a61d57b1c612758b6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x161B9 | 10608 bytes |
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