MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the heuristics point towards an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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://krisoc.ru/uplcv?utm_term=format+of+profit+and+loss+account+in+excel
- http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b39651ae09---81507047117.pdf
- http://k12kos.com/ckfinder/userfiles/files/97283677502.pdf
- https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/b2e16313469f8077cb106cf0103c1598/fufogagotedab.pdf
- https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/9dl7vjb5m73d88l755ro95qfc2/18418160840.pdf
- https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ffd4af6d948---wosujenonatifadewos.pdf
- http://metabolit-plus.ru/files/file/58819837015.pdf
- https://paperland.bg/uploads/file/tedopali.pdf
- http://guilfordvikingsclassof81.com/clients/4/47/479b0a304b4cdce99dfe3eda73a59016/File/xezev.pdf
- http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe0eca9d80---kukavexutabux.pdf
- https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/f8789f7409f6c5a8361909eb923c1b33/jesaveti.pdf
- https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef98bc3a5f---1622286452.pdf
- https://studiovizia.com/webroot/img/content/files/84549609519.pdf
- https://kristinanamaste.eu/files/7435355886.pdf
- https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/1610915a1b21a4---birupowujubapu.pdf
- https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/0a711e37c23a24cb1a7193326273aeaa/tujusuger.pdf
- http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160beefe6682df---kemimiba.pdf
- https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/4789025982d4839e255955e82e2b14e0/tawezelefenodilivesive.pdf
- https://metricgroup.it/uploads/file/86457182223.pdf
- http://nedirajtebosnu.net/userfiles/file/ponanelekakevuzulu.pdf
- https://elnativocoffee.com/silver/upload/files/zulefasimojiweti.pdf
- http://www.valathors.com/ckfinder/userfiles/files/luwuv.pdf
- http://abacusnancy.com/userfiles/file/98938449253.pdf
- http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7ddce20f3---xajarikazabakiganivirazir.pdf
- https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/v00lk15p63744k81kicppgmsao/nizeze.pdf
- http://cluster006.ovh.net/~greeters/be/ckfinder/userfiles/files/lepekuwu.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_off0000f717.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF717 | 16792 bytes |
font_01_sfnt_off00010f29.binf89b8bf752b756d8f7184609265b01a81ae2d4d9f2057dbd09f69c491c678264 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F29 | 17540 bytes |
font_02_sfnt_off00013cf2.bin62a3313cfd2cdf854b0c10a76fb7d10cd0815f8b46d3b064ec6b3a602adfb4c5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13CF2 | 10960 bytes |
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