MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a link farm or phishing lure. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics strongly indicate malicious intent, with ClamAV identifying it as 'Pdf.Phishing.Trojan'. The presence of embedded URLs and the nature of the heuristics point towards a phishing or malware distribution campaign, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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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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://inwebjor.ru/uplcv?utm_term=android+security+flaw PDF link annotation
- http://kimsanghun.com/upload/userfiles/file/2021917226412173.pdfIn PDF document text
- http://interroadholland.nl/userfiles/file/70117671091.pdfIn PDF document text
- https://rm-parketi.si/uploads/zatadewizaziwasalewe.pdfIn PDF document text
- http://grandp.ru/userfiles/file/gakepimidujujudupesu.pdfIn PDF document text
- http://cbestdesign.com/ckfinder/images_store/files/76402510109.pdfIn PDF document text
- http://czernavendeghaz.hu/admin1/file/8878203722.pdfIn PDF document text
- http://mannaz.pl/userfiles1/file/vasibotuzuzalevilo.pdfIn PDF document text
- http://camdohungdung.com/upload/files/82228338341.pdfIn PDF document text
- https://www.rapn.ru/ckfinder/userfiles/files/33986628250.pdfIn PDF document text
- http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bcad9e9d10---dulogufilegekeweki.pdfIn PDF document text
- http://saraiaser.nl/userfiles/file/firunosadopijijomuxekazis.pdfIn PDF document text
- http://clinicaveterinariasangiacomo.it/userfiles/files/guwaxifonefirirukan.pdfIn PDF document text
- https://pergamine.com/ckfinder/userfiles/files/xukogeliwufomamu.pdfIn PDF document text
- https://www.pension-chevaux-haras-gabereau.fr/ckfinder/userfiles/files/bolez.pdfIn PDF document text
- http://mmprogetti.it/userfiles/files/82953027811.pdfIn PDF document text
- http://thuocnam.xyz/images/files/koketolajudunividetileb.pdfIn PDF document text
- http://hladonural.ru/upload_picture/29595176305.pdfIn PDF document text
- http://bukharaatlanta.com/sites/default/files/file/36427770880.pdfIn PDF document text
- https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/5beeb55cf3e8716301fd4d1a573beeea/82689362632.pdfIn PDF document text
- http://bellamy.tw/uploads/files/202109051853259572.pdfIn PDF document text
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/54d2a478119983d8d7c0c97b4c8d35c0/62389159178.pdfIn PDF document text
- https://seikai.jp/free_images/files/suwuvivitasugosigizolu.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_off0000bc93.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC93 | 16184 bytes |
SHA-256: c36162402c0b82c7854cf1ad679aa645e7b3dd1167a62e2c14efc44498fe1b24 |
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font_01_sfnt_off0000e675.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE675 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000fe8c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE8C | 10752 bytes |
SHA-256: 55768c7602cb3bc81eb25c713980708eb34185ced128f3383937404055b6b1c6 |
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