MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document contains a link farm, with many URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of a 'Fake invoice / payment lure' heuristic further supports the phishing attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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 http://valdhans.cz/userfiles/file/wozudadujujujomiku.pdf
- https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/2f3db21d4b5880d0a65ae40fb3882044/38121625383.pdf
- https://wcfkenzi.com/ckfinder/userfiles/files/rafisavipebawo.pdf
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/tu1kur5qq86rr6anui27c1v7nl/54176370004.pdf
- https://www.alphaveneers.com/wp-content/plugins/super-forms/uploads/php/files/db9336d5749a4ba15bc750594191c66b/6436383596.pdf
- http://haenuri.net/ckupload/files/limuvexevekumiruwewigi.pdf
- http://kimhoatra.com/upload/fckimagesfile/84737866324.pdf
- http://karthikeyanjayaram.com/userfiles/file/46725620152.pdf
- http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b18ea21b6d0---40364763700.pdf
- https://shreenathtechnologies.com/userfiles/file/80073628672.pdf
- http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6572b93284---bisetora.pdf
- http://anm-av.de/uploads/files/64252281844.pdf
- https://machinex-machines.com/UserFiles/File/porabizoveguserokakugako.pdf
- http://aokisuper.com/ckfinder/userfiles/files/fiwukurapadetilara.pdf
- http://jakebenmd.com/clients/0/0e/0eef9d569b11303d075d19626cc6f958/File/zijiroxoviminega.pdf
- https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160fac82cbab20---muvuzetoguwok.pdf
- https://nadamasristorante.it/file/kazinomirubuga.pdf
- https://butchercurnow.com/img/shop//contents/12446614133.pdf
- https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/d3edae2c794c4b33086fa2d9a3238761/zopujav.pdf
- http://hyswimpool.com/userfiles/mopujupunisalatozuzefobe.pdf
- http://aven.su/userfiles/file/20967417627.pdf
- http://tecresconsolidamentorestauro.it/fck_data/file/69961693328.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+download+police+scanner+app
- https://lapdonline.org/file/wotezofukutasaju.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_off0000e8c1.binfc45ddbfc2feb8f4b4fa9aaa399b5b7199e2223e0601ad24b8a2cda6a5a911cb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8C1 | 16996 bytes |
font_01_sfnt_off0001153b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1153B | 16792 bytes |
font_02_sfnt_off00012d52.bin4a8ba4b71e6534ad340918a7f7eff1c03fbfa3e5b3f756e51a0a814e2b0d53de |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D52 | 10584 bytes |
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