MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs pointing to disposable hosting, indicative of a link farm designed to redirect users to malicious sites. The presence of a callback lure heuristic suggests a phishing or scam attempt. ClamAV detection and ML classification confirm the malicious nature of the file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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=galaxy+note+10+not+charging
- http://world-spa-resorts.com/dok/bivunusokinomosobalu.pdf
- https://iphone-odklep.si/vsebina/gemoponuxosifexofulagasu.pdf
- http://chuabenhxuongkhop24h.com/images/files/vidiv.pdf
- http://csc0351.com/userfiles/file/20210910130518_dxv6hu.pdf
- https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613194fb68a5e---87848590716.pdf
- http://caminodesantiagoenmoto.com/assets/ckfinder/core/connector/php/uploads/files/41712687082.pdf
- https://eventpro-kontraktorpameran.com/uploaded/files/39263573645.pdf
- http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613013853bce3---dalokodubupelofopef.pdf
- https://pestresolution.pt/site/upload/file/23550305527.pdf
- http://kedehg.com/ckfinder/userfiles/files/wafomegame.pdf
- https://jager-ig.tw/up_photo/file/mofoniretovineboxot.pdf
- https://indicaperu.com/userfiles/file/paweteva.pdf
- http://lemma-studio.pl/userfiles/file/sapobibulibeme.pdf
- http://kraski-chernila.ru/resources/file/jomaxurozisojilawotibuz.pdf
- https://www.barrau-philippe-sedeco.fr/ckfinder/userfiles/files/83173600440.pdf
- https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/c5568bfd4c368481a881e7c073ec9934/galuziziwere.pdf
- https://fenicia.uy/fenicia.com.uy/uploads/files/ridurako.pdf
- https://poldercuptrofee.nl/site/admin/ckfinder/userfilesfiles/goforufitilaferebawisabem.pdf
- http://locke-3c.tw/uploads/files/202109020921286090.pdf
- https://iieng.org/editor/ckfinder/userfiles/files/sogimafajutin.pdf
- https://granitnet.hu/editor_up/52335188129.pdf
- http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/9aa5b827f46ff628924805ba1d4a9f8b/24155999771.pdf
- http://evohome.pl/userfiles/file/jotagatulopokogoxilobufi.pdf
- https://idroilektriki.gr/files/file/7533584116.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_off0000db11.bin637ffeae368b5ebb4621a4a6e6aaaead1d0e8f4530a548996c49fdf48ce67063 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB11 | 17284 bytes |
font_01_sfnt_off000107e9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107E9 | 16792 bytes |
font_02_sfnt_off00012000.bin57eb74c1c963f6b403508fbf3b2c2e43664d599a5a370127f6fba9ef184afb6b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12000 | 10772 bytes |
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