MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm with numerous external URIs pointing to potentially malicious domains, including one that suggests keylogger distribution. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a tactic to obscure malicious links within a large number of seemingly unrelated domains.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 5
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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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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=best+keylogger+apk+for+android PDF link annotation
- https://egyptsuntours.com/userfiles/files/59795941081.pdfIn PDF document text
- http://p-jtech.com/userData/board/file/posigogasemoto.pdfIn PDF document text
- http://cerescommoditiesltd.com/Images_upload/files/rijititijek.pdfIn PDF document text
- http://bularz-auto.pl/images/userfiles/file/nubibogotup.pdfIn PDF document text
- https://nilsahost.com/calisma2/files/uploads/vilidusoratovukegex.pdfIn PDF document text
- http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/16130cc8fbf04f---4289947357.pdfIn PDF document text
- https://kottayammedicalcollege.org/CMS/ckfinder/userfiles/files/nekezuzinebif.pdfIn PDF document text
- http://xn--4k0b43gkwo4gn.com/upload/editor/file/makadasogaruwejadexi.pdfIn PDF document text
- http://samwha.com/upload/userfiles/file/rifomuraxewapowedu.pdfIn PDF document text
- http://area100impianti.it/userfiles/files/tesagi.pdfIn PDF document text
- http://toanthinh.vn/webroot/img/files/88419707734.pdfIn PDF document text
- https://bibonatura.hu/ckfinder/userfiles/files/biludevugiwizi.pdfIn PDF document text
- https://smwebtechnology.com/arishayurveda.com/userfiles/file/bubokegax.pdfIn PDF document text
- https://tomorrowhubs.com/upload/users/files/90166333519.pdfIn PDF document text
- http://licausi.it/userfiles/files/lajovijabawunut.pdfIn PDF document text
- http://sity-luxe.ru/userfiles/file/27371871948.pdfIn PDF document text
- http://mitcostruttori.it/userfiles/files/zifonono.pdfIn PDF document text
- https://futuresbuilder.net/dayafter/uploadimages/newsimages/file/25936536390.pdfIn PDF document text
- http://parkingparts.com/Upfiles/file/82306491085.pdfIn PDF document text
- http://xn--rssx31a7tec6p.com/upload/userfiles/files/20210906052436.pdfIn PDF document text
- http://globalfeedindustry.com/upload/files/nazeduz.pdfIn PDF document text
- http://happysmilecard.com/uploads/files/63662705316.pdfIn PDF document text
- http://yuhenganquan.com/userfiles/file/20210907135725_652649141.pdfIn PDF document text
- https://condominiovillage.com/userfiles/file/57871691916.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_off0000de2c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE2C | 10932 bytes |
SHA-256: 0c4d97f127271bb68be2f22a28d7a404c207b9c51847a4d15dba49dce9483bd0 |
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font_01_sfnt_off0000f77f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF77F | 18028 bytes |
SHA-256: 11cfbf4d506648b66b2ccb40c098f8baf11872547949b5abdca3eb623ea5287d |
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font_02_sfnt_off000125d8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125D8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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