MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was identified as malicious by ClamAV and an ML classifier, and it contains embedded JavaScript. The PDF also exhibits characteristics of a link farm, with numerous external URIs pointing to various domains, some of which appear to be compromised CMS upload directories. These links likely serve to redirect the user to a malicious site for further exploitation.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://bankkartya.hu/js/ckfinder/userfiles/files/98890999821.pdf In PDF document text
- https://ofertaromania.ro/ckfinder/userfiles/files/pevinutidamomopofegak.pdfIn PDF document text
- https://krono-original.vn/Images_upload/files/663862677.pdfIn PDF document text
- https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160814ec3b3efa---65341047819.pdfIn PDF document text
- https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/v3pl58aebg6kuqlf14lmtg3p44/45202666135.pdfIn PDF document text
- https://rijst.nu/userfiles/file/13527322315.pdfIn PDF document text
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c861774b776---wimugagorojavifevaxuzotaw.pdfIn PDF document text
- http://massarentearchitettura.com/userfiles/files/3692611597.pdfIn PDF document text
- https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/3b649cc4ac0550439a016dfe160f15b7/33374512682.pdfIn PDF document text
- https://letajicikoberce.cz/userfiles/file/68724874025.pdfIn PDF document text
- http://englandmatchshirts.com/assets/file/14633555491.pdfIn PDF document text
- https://portugaliaimagyarok.com/ckfinder/userfiles/files/lireralalik.pdfIn PDF document text
- https://arerp.kr/data/file///genoxurapana.pdfIn PDF document text
- https://xn--mgbaf4adbs1bd2i.net/upload/ckfinder/files/dulubobobel.pdfIn PDF document text
- http://fotostudiovaccari.it/userfiles/files/lemetopatifigapivoj.pdfIn PDF document text
- http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160afb2d0c16d2---30144128995.pdfIn PDF document text
- http://cokhiminhhien.com/media/ftp/file/sijaloraro.pdfIn PDF document text
- https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/7mhdiheihdffhsifi2khib77h7/56382702533.pdfIn PDF document text
- http://permanentnimakeup-brno.cz/userfiles/files/medadefudotutetifosolado.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161159ccf69bbb---83093880379.pdfIn PDF document text
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b26c2b1f0---48992779903.pdfIn PDF document text
- http://revucue.com/ckfinder/userfiles/files/borikowuzitegarasuvopede.pdfIn PDF document text
- https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/a2d5010afef2f88a1a646c7630627d16/97436809644.pdfIn PDF document text
- https://twr1115.net/files/fckeditor/file/xulajezulutiduxok.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=unstructured+interview+pdfPDF link annotation
- 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_off0000d7ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7EF | 16328 bytes |
SHA-256: 81d7ffcf8748ac3b2545a1aeb8c51e5ec48df123f6beff8bd01d249c9788f894 |
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font_01_sfnt_off000101b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101B4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000119cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119CB | 10544 bytes |
SHA-256: 32b9ee94cc3c91671cc07698ad9002a0704938b4cf490b97ffbadee3f04a4518 |
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