MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains heuristics indicating it is a fake invoice or payment lure, designed to trick users into downloading a malicious file. Multiple URLs are present, some pointing to compromised CMS upload storage, suggesting a distribution mechanism for further payloads. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://shinko-tw.com/UserFiles/file/72272436239.pdf
- https://patidarpalanpur.com/web/k/main_admin/ckfinder/userfiles/files/zasipiluzibojiva.pdf
- https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b791b4439---85458098282.pdf
- https://bczenekar.hu/files/file/tejuwegarukovut.pdf
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/2d03df1196409df150dbd7e961a9405a/26029741909.pdf
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16097900162c37---fitewukerovaf.pdf
- http://www.annaleehuber.com/content_files/file/297432801.pdf
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609306f4785a4---55281156573.pdf
- http://youngshiny.com/userfiles/file/1626231202.pdf
- http://backkwang.com/userData/board/file/75700193847.pdf
- https://bookatowncar.com/userfiles/file/46509290676.pdf
- http://tuhs1970.com/clients/a/ac/acc339db084e87cdfae31a76a6c96f1c/File/76786006614.pdf
- https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f47ce2d826---gikatowewopogovozi.pdf
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160eca78b26078---vatajurifuko.pdf
- https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3e4ca17972---wuvesukanif.pdf
- http://hrzservices.com/uploadfiles/file/17836216287.pdf
- http://moristas.com/userfiles/files/89524573068.pdf
- http://didopack.com/files/walexatovuvadopogikub.pdf
- http://pincailight.com/zk/UploadFile/file/2021073002440273499.pdf
- http://costruzionibulagna.it/userfiles/files/79857079022.pdf
- http://vce34.ru/attachments/file/67879354693.pdf
- http://take114.kr/FileData/ckfinder/files/20210725_ED3E50D6BD34C7F2.pdf
- https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16072e2fdbe7ad---zajuz.pdf
- http://www.gonouvellezelande.com/files/mivezorububujak.pdf
- https://eobliecky.sk/userfiles/file/tovisaj.pdf
- http://walosports.cl/userfiles/file/pefagodaduxopim.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+activate+autocad+offline
- 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_off0000efe9.bin53ed65314071c1438173cbc06350a56498d6ef0a60564ac56ecc5dde66cc936a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFE9 | 17532 bytes |
font_01_sfnt_off00011e4c.binb6411be8862ed217570f619a95fae069a66caddda49163fe67eb49b31ea77767 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E4C | 10444 bytes |
font_02_sfnt_off00013620.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13620 | 16792 bytes |
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