MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous URLs pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to distribute further malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9945
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://catamma.ru/uplcv?utm_term=how+can+i+update+yowhatsapp+version
- https://yorapp.it/file/nusetofalexunitabamawu.pdf
- http://writtenmail.com/upload_images/file/ferewokomaw.pdf
- http://hatowo.com/app/webroot/uploads/files/3640633191.pdf
- https://bisnismedsos.com/userfiles/file/dapepefabamuninowijagowe.pdf
- https://palcev.ru/userfiles/file/nixilemosawubijujuvo.pdf
- https://growyourmoney.in/userfiles/files/27481063772.pdf
- http://julianina.dk/upload/file/36541807839.pdf
- http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af81a3e5f83---45563248758.pdf
- https://www.helpforbusymums.com/wp-content/plugins/super-forms/uploads/php/files/bdc37e424e760e84bfd82a6c464bfa88/pageke.pdf
- http://atek-ent.com/upload/file/71017341133.pdf
- https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/lk8eqeogll4c79chl039771jem/45253289562.pdf
- http://hf1968.com/clients/48820/File/poveduve.pdf
- http://orourkelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/8108417321.pdf
- https://simon-daulte.com/ckfinder/userfiles/files/wewajugofawasol.pdf
- http://adaviestransportltd.com/userfiles/file/54079865207.pdf
- http://ordinate-ltd.com/file_media/file_image/file/xigamebune.pdf
- https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/3d5cca9399ba30a4a416b6f0d76dcc27/34857791323.pdf
- http://ivankotov.ru/img/lib/file/weladukoda.pdf
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16105dab8ad374---4201787309.pdf
- https://investmentskillsgroup.com/images/userfiles/file/ropalodokubikexesoxo.pdf
- http://cochu.net/resimler/files/88748048380.pdf
- http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160add62aebaf0---65244158994.pdf
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a80aadd5ca7---74597008582.pdf
- https://advik.net/userfiles/file/bawedamujo.pdf
- http://jngf.cn/files/file/81822586764.pdf
- http://dentalcenterstudio.it/userfiles/files/29409582753.pdf
- https://alasclub.gr/neuro/ckfinder/userfiles/files/17023337698.pdf
- https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1610f2e0e35464---78595074559.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_off0000f3aa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3AA | 16792 bytes |
font_01_sfnt_off00010bc1.bin43a003620dcad39ac307ac337c1e65df363cc88bb2331fd79211abf39ddaafd3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BC1 | 10920 bytes |
font_02_sfnt_off0001250a.binaf7628660847c43d2f2a9db45bd76ac4cc028890e0192396bc856f750aa3d7c7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1250A | 16796 bytes |
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