MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ClamAV and an ML classifier, with multiple heuristics indicating it functions as a link farm. The URLs point to compromised websites and disposable domains, suggesting a phishing or malware distribution scheme. The document's structure and embedded links are consistent with a spearphishing attachment used to lure victims to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9849
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://crysiq.ru/uplcv?utm_term=answers+of+english+literature+class+10
- https://drproperty.in/userfiles/file/zixuxabifuweg.pdf
- https://regaluxiluminacion.com/uploads/assets/file/siradidazonawiv.pdf
- https://bearings.vn/images/ckeditor/files/sogamirumosuvoxapiwu.pdf
- http://globalbando.com/DATA/upload/files/202109130123235763.pdf
- http://files.ibiza-ferien.de/file/54366975094.pdf
- http://bordahusfeldolgozo.hu/editor_up/70718783184.pdf
- http://embody.box8websites.com/ckfinder/userfiles/files/vufasov.pdf
- http://wimborst-ceramics.nl/public/view/upload/fckeditor_images/file/bitunotuk.pdf
- http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16155d17ea52fb---wumiroxanoxewatami.pdf
- https://centaur.vri.cz/docs/files/3689053255.pdf
- http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/pue4moctekdnnq676676mm3oqk/kixot.pdf
- http://wjvanderheidedienstverlening.nl/uploads/file/davotivasifidafasuruka.pdf
- http://architetturaurbanistica.it/userfiles/files/xitanipexoxaremiw.pdf
- http://law885995.com/upload/fckimages/file/54520621363.pdf
- https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/c6aac73d88e028377c55c7f2f4803b0c/demodawusami.pdf
- https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/mj3aegda5p7gfg26ij7rp53c54/6637535623.pdf
- http://xetaihyundai.net/upload/files/xibudi.pdf
- https://quangcaonoithatgiahung.com/admin/webroot/upload/image/files/73822172177.pdf
- https://larustt.com/upload/ckfinder/files/62016092636.pdf
- https://sdhouse.info/ckfinder/userfiles/files/32610110970.pdf
- http://steakclubhn.com/campannas/file/xazivaloko.pdf
- http://agisma.ru/files/pages/files/73810015355.pdf
- https://amzentransportationindustries.com/admin/imagetemp1/file/xitiz.pdf
- https://parlagame.com/calisma2/files/uploads/57953933355.pdf
- http://megaprestige.ru/uploads/files/62376790790.pdf
- http://newbusan.net/FileData/ckfinder/files/20210905_E53672A6FE37DACD.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_off0000b16c.bin1c98c96d29cefa6c214dc421f8b418f253205a4c12c80963ac25b818ac103dea |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB16C | 10956 bytes |
font_01_sfnt_off0000caeb.bindc1a7cdc4427e15362559e7d8bd5847fba482748e732cb58c66c64505f1e96fd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCAEB | 15004 bytes |
font_02_sfnt_off0000f10e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF10E | 16792 bytes |
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