MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics indicate it functions as a link farm and contains a callback lure, suggesting a phishing or scam attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a social engineering attack designed to trick users into initiating contact, likely for further exploitation.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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=sims+mobile+money+cheat PDF link annotation
- http://studioassociatoemc.com/userfiles/files/21849434664.pdfIn PDF document text
- https://kotata-zlin.cz/obr/clanky/file/27136325590.pdfIn PDF document text
- http://denprokhorov.ru/images/file/64549150485.pdfIn PDF document text
- https://gberwanda.com/gbe/useruploads/blogs/files/zuwikotufonadawolelur.pdfIn PDF document text
- https://8-hi.dataroom.tw/upload/file/38571971575.pdfIn PDF document text
- http://planet-for-events.de/userfiles/file/zububadakasigutira.pdfIn PDF document text
- http://maidichike.com/upload/files/20704388118.pdfIn PDF document text
- https://marathonlaval.com/userfiles/files/fovaduvatusixevo.pdfIn PDF document text
- https://shevtsov-art.com/uploads/files/29720264245.pdfIn PDF document text
- https://intekcanada.com/ckfinder/userfiles/files/16572890601.pdfIn PDF document text
- http://hcstonetw.com/uploads/files/202109201213127196.pdfIn PDF document text
- http://neoclassicalmansions.com/uplds/file/38559874354.pdfIn PDF document text
- https://juraganmonyet.com/contents/files/lewijizipajipem.pdfIn PDF document text
- http://byty-pardubice.eu/UserFiles/File/rasazokopudegeremu.pdfIn PDF document text
- https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/m91633tsq3lvtenbibaoc9g69p/22805875719.pdfIn PDF document text
- http://austria-ex.com/images/blog/file/5922482915.pdfIn PDF document text
- http://uniquehotelsolutions.com/files/others/fuxevitivofebumav.pdfIn PDF document text
- https://www.solucionaesp.com/ckfinder/userfiles/files/pilub.pdfIn PDF document text
- https://expomediainc.com/upload/file/pefupewipowobegafilifu.pdfIn PDF document text
- http://hiroi-es.info/yamituki-n/uploads/files/pakomomexufetefatabuwuxe.pdfIn PDF document text
- http://safetyservicecenters.com/userfiles/file/funonelageg.pdfIn PDF document text
- http://kernenshepler.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/verir.pdfIn PDF document text
- https://irisapp.cn/uploadfiles/fckeditor/20210904/file/16306913015373.pdfIn PDF document text
- http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16164f7bc74c34---91678091388.pdfIn PDF document text
- https://dbmotorbrokers.com/userfiles/file/rojuvidozugojilibuj.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_off0000e006.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE006 | 10724 bytes |
SHA-256: 4ca1b3336d8c26f04c5b44a96cfd03da98ad144bee3d6b901fa81959dc012166 |
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font_01_sfnt_off0000f87e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF87E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011090.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11090 | 19688 bytes |
SHA-256: 9ccbe35d0356142f27d06b96be2b272d0e2dfe6be8c7b1d08285eeefe3762f11 |
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