MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document containing embedded JavaScript, which is a common technique for executing malicious code. It also features a large number of external URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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://allytemp.ru/uplcv?utm_term=lower+part+of+stomach PDF link annotation
- http://bischofs-scheune.de/userfiles/file/44235984988.pdfIn PDF document text
- http://wwpokebar.com/uploads/files/51090561774.pdfIn PDF document text
- http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132c0f4d5602---segepilafuvupesetene.pdfIn PDF document text
- https://i-try.tw/upfile/files/2021/09/09/24139146886.pdfIn PDF document text
- http://bakefruit.com/uploads/files/202109052019012842.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130c7efae31e---65176847565.pdfIn PDF document text
- http://xn--oy2b19v1mb1yi.com/userfiles/file/40961650503.pdfIn PDF document text
- http://vsrru.ru/userfiles/file/wuxixinenalekojatunuru.pdfIn PDF document text
- http://druckmaschinenservice.com/uploads/fce/files/45812729402.pdfIn PDF document text
- http://25630638.kad.tw/kads/ckfinder/userfiles/files/mivugavumoluxawej.pdfIn PDF document text
- https://apteka-wratislavia.pl/halatecza/userfiles/file/93303077085.pdfIn PDF document text
- https://snpwachq.com/files/js/ckfinder/userfiles/files/61717133850.pdfIn PDF document text
- http://cbgnfinance.com/userfiles/file/farujibavuvenezawaninewux.pdfIn PDF document text
- http://corporatiegids.nl/uploads/files/modutawafimazebomu.pdfIn PDF document text
- http://evopizza.lt/ckfinder/userfiles/files/mitiperuxanevanupi.pdfIn PDF document text
- https://egokituz.org/files/galeria/files/rufosoje.pdfIn PDF document text
- http://ajk-opakowania.eu/upload/fck/file/53243839069.pdfIn PDF document text
- https://lajovisena.com/gallery/file/72378829005.pdfIn PDF document text
- http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613727b616825---mesij.pdfIn PDF document text
- http://realfootball.gr/userfiles/file/90658644951.pdfIn PDF document text
- http://saaretravel.ee/images/file/salujakipok.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_off0000c559.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC559 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000dd70.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD70 | 10544 bytes |
SHA-256: cb421c781c87aa511316252fe2cdae7531b0aba95f09f3a1b861389a461d6314 |
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font_02_sfnt_off0000f598.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF598 | 17948 bytes |
SHA-256: e3663ca76a1a12f8cfedc588515bdcbcedfaf4d71e084c30aa9f5bc1a757554d |
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