MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs that form a link farm, directing users to potentially malicious websites. Heuristics indicate these links are hosted on disposable or compromised domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://chcial.ru/uplcv?utm_term=sim800l+gsm+module+pdf PDF link annotation
- http://phatnang.com/media/ftp/file/89703453216.pdfIn PDF document text
- http://universe-micro.com/upload/files/20210705_054228.pdfIn PDF document text
- https://rajatotogroup3.com/contents/files/17393808104.pdfIn PDF document text
- http://joyandwowbook.com/upload/file/fugobupenubupazapoma.pdfIn PDF document text
- https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/h4bsnd3j2bhbli4rfkqfga1iih/62009446250.pdfIn PDF document text
- https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/bc3dd1d79efbabbcd90687d8658abfdc/67352889252.pdfIn PDF document text
- http://jatyn.cn/upfiles/202106/file/1622952485.pdfIn PDF document text
- https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087b80aa74fa---fowew.pdfIn PDF document text
- https://washlounge.in/ckfinder/userfiles/files/nujij.pdfIn PDF document text
- https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/783951591088790796706324e5f73c79/lateludaxorajetasi.pdfIn PDF document text
- https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e8e63f6851b---zutusepil.pdfIn PDF document text
- http://baldonimarcostudio.eu/userfiles/files/vupoluse.pdfIn PDF document text
- https://accesoriosalmayor.com/images/userfiles/file/gekerepogurubugebad.pdfIn PDF document text
- https://media-get.com/userfiles/files/luvutusilopafupete.pdfIn PDF document text
- http://permanentnimakeup-brno.cz/userfiles/files/xirilobofusarulazif.pdfIn PDF document text
- http://esipro.fr/userfiles/file/57026443702.pdfIn PDF document text
- http://libertyquad72.fr/userfiles/file/25758966040.pdfIn PDF document text
- http://nyett.hk/uploads/news/files/74504344356.pdfIn PDF document text
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb04b28419---17272064187.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000bb17.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB17 | 10884 bytes |
SHA-256: 35687aee578a2f0c1612bf4bf5638dba8db2b89d47ac610df95ba90cd5d9d239 |
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font_01_sfnt_off0000d3f9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3F9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ec0b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC0B | 22124 bytes |
SHA-256: 553b497fbdad6927a0b51867ecd62284946552efc572d36d1cfea5aa88dbd54d |
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font_03_sfnt_off000123a0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123A0 | 17056 bytes |
SHA-256: ef7b933e3b579a054fbd2f0b2d02dc07cde9814575f0ce91b7e47557efc445e1 |
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