MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs that point to a variety of domains, many of which appear to be part of a link farm. Several heuristics indicate that these links lead to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://philabc.ru/uplcv?utm_term=ctrl+l+chrome PDF link annotation
- http://safetruck.gr/images/file/44399417980.pdfIn PDF document text
- http://khaskhaan.mn/uploads/userfiles/files/42897423060.pdfIn PDF document text
- http://jjw-led.com/userfiles/file/25981356037.pdfIn PDF document text
- http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130ccee792e3---7682276274.pdfIn PDF document text
- http://harmonie-avion.fr/actualite/files/20075778995.pdfIn PDF document text
- http://hanart21.com/files/userfiles/file/68606113665.pdfIn PDF document text
- https://youkuvpn.com/upload/files/99003438407.pdfIn PDF document text
- http://360global.ca/userfiles/file/7687201285.pdfIn PDF document text
- https://dwitunggaljaya.com/sitefiles/file/51029765705.pdfIn PDF document text
- https://selapro.com.au/application/third_party/ckfinder/userfiles/files/palab.pdfIn PDF document text
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/161396bbde72d7---barojarajix.pdfIn PDF document text
- http://yidaig.com/uploadfile/file/20210902005934.pdfIn PDF document text
- http://strap.sk/uploads/files/likezilasanapoduveladev.pdfIn PDF document text
- http://fcgo.tw/uploadpic/files/67840346058.pdfIn PDF document text
- http://freeski.hu/freeski/file/kosikugabiku.pdfIn PDF document text
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/64d33bd4786b0f48469cc70e7bb8b1d1/47283527953.pdfIn PDF document text
- https://hoya.hr/UserFiles/file/31756202817.pdfIn PDF document text
- https://anjingliar.com/contents/files/79065295343.pdfIn PDF document text
- http://sladkiy-ostrov.ru/userfiles/files/34697103210.pdfIn PDF document text
- http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/161409badb8fb5---53874910315.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 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d34a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD34A | 16512 bytes |
SHA-256: c0af1c54c377050dc615c27479cc97ecc73742c954bc051216ae5d24c8bd642b |
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font_01_sfnt_off0000ea5a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA5A | 10000 bytes |
SHA-256: 33c2a2002ea06d2463275311a730b6ef65829fe5495bfa6c44d27d236487e05c |
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font_02_sfnt_off00010085.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10085 | 2128 bytes |
SHA-256: ea0838c56c771baac3e7294113a37a869da30c0923c5234740d3ad99157bc88d |
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font_03_sfnt_off00010a1c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A1C | 26232 bytes |
SHA-256: 072322e0ef4d6408aa4223db5ccb8a71225cf101fb21126b490b069cb5546783 |
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font_04_sfnt_off00014813.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14813 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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