MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and link farm patterns, suggesting it is designed to redirect users to potentially malicious websites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this, indicating the use of compromised or disposable hosting for these links. No scripts were extracted, but the overall structure points to a phishing or credential harvesting attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://krisoc.ru/uplcv?utm_term=digimon+masters+online+download+android PDF link annotation
- https://www.truck-transport.com/ckfinder/userfiles/files/tezoreg.pdfIn PDF document text
- https://mertlakustika.cz/images/pages/file/poburuwepolanimikeguz.pdfIn PDF document text
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fdc424eff9---gorogovodevogamejetamum.pdfIn PDF document text
- http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/6h520oo3575n723tmpugvvm34o/zavanutiz.pdfIn PDF document text
- http://alfavit.tv/userfiles/file/vupobime.pdfIn PDF document text
- https://jnvhardoi.org/ckfinder/userfiles/files/2610328736.pdfIn PDF document text
- http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/6edb90e8aed324eb3d7392210809f745/kaserupasotog.pdfIn PDF document text
- http://toyotarent.hk/FileData/ckfinder/files/20210904_7DAD66C7DE7C1DCA.pdfIn PDF document text
- https://ever-progress.dacola.com/upload/files/15045482533.pdfIn PDF document text
- http://chiari-web.com/ckfinder/optimist/files/nodekapimu.pdfIn PDF document text
- https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/88fa0c96ea7a780917323fe595087fe8/latelegaxewenojebew.pdfIn PDF document text
- https://www.padanguparduotuve.lt/ckfinder/userfiles/files/kezanivuvinena.pdfIn PDF document text
- https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/58a1a661875f633376cd5ef49de7dd54/73958359729.pdfIn PDF document text
- http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614310467d75a---xerilawixofananamemenu.pdfIn PDF document text
- https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16131b35a310b3---11385840849.pdfIn PDF document text
- http://rockbond-aac.com/id-admin/fckImages/file/pewab.pdfIn PDF document text
- http://stillincontact.com/images/mails/file/66272528714.pdfIn PDF document text
- http://studioego.cz/userfiles/file/zewezogitopadopu.pdfIn PDF document text
- http://gr-chem.com/upload/files/68523977079.pdfIn PDF document text
- https://ajambary.com/userfiles/file/zabule.pdfIn PDF document text
- http://jinruily.com/UploadFile/file/20210911075259529.pdfIn PDF document text
- http://orzo.cz/uploaded/files/17665860270.pdfIn PDF document text
- http://ever0036.com/assets/uploads/ckedit/files/20210911100310.pdfIn PDF document text
- http://dishandspoonproductions.com/ckfinder/userfiles/files/dunitoxowominefamitep.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d086.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD086 | 17520 bytes |
SHA-256: 428d2bf1b9b2ab0f459a70a305332577e84b0136a41256b8af4028af06564568 |
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font_01_sfnt_off0000fe33.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE33 | 10680 bytes |
SHA-256: b1ca48503df2cc2a32fc5d3c00540410c4ca2ceafe97227f80345fdbe7fdd19f |
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font_02_sfnt_off0001167f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1167F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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