MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan payload. The document contains numerous links to external sites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to distribute malicious content. The presence of external URIs and link farms points towards an attempt to redirect users to malicious downloads or phishing pages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
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://pistant.ru/uplcv?utm_term=wiley+cpa+review+pdf+free+download PDF link annotation
- https://orrizon.ru/images/file/19202444772.pdfIn PDF document text
- http://belovosushi.ru/files/negivetokigipibiwi.pdfIn PDF document text
- https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/7ba5bb1f61dede71be12df87e953e4f2/44533378067.pdfIn PDF document text
- http://opuspointpartner.com/ckfinder/userfiles/files/morijututexasav.pdfIn PDF document text
- https://sharjahcements.com/images/bulk_images/files/69507942452.pdfIn PDF document text
- https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/6824e4d84d6b18ec8761d5bdfe19fbc5/gimewij.pdfIn PDF document text
- https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607abc912327d---86078447262.pdfIn PDF document text
- http://gaytonfa.com/upload/files/rafemimux.pdfIn PDF document text
- https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609832683dae4---49094036421.pdfIn PDF document text
- https://planet-for-events.de/userfiles/file/kapag.pdfIn PDF document text
- https://olterus.com/contents//files/86746085338.pdfIn PDF document text
- http://malbreil.com/userfiles/file/monige.pdfIn PDF document text
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1610e96fe4ec0b---jegamazafupifef.pdfIn PDF document text
- https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ae7f6a30be9---lezugutozizosabe.pdfIn PDF document text
- https://colakcivi.com/userfiles/file/59486661251.pdfIn PDF document text
- https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610aebea565b5---firogonov.pdfIn PDF document text
- https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bde6f0a77db---76306151056.pdfIn PDF document text
- https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/b0de5139b523673f0b8a7d01d732f611/ledinibam.pdfIn PDF document text
- http://faurau.com/luodan/images/userfiles/file/wamaduji.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_off000111f6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111F6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00012a08.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A08 | 19188 bytes |
SHA-256: 6762e6ddcf6ee4d29dd6a790704338e8a747f7f77056998e3f59a4fc00be7ba0 |
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font_02_sfnt_off00015bea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15BEA | 10604 bytes |
SHA-256: 05af2c563ea6ccacf60a1c546ad9de577156e1c23f6811ce5e8ba08ca99ac3c5 |
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