MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://syntellect.ru/Repository/file/simegupo.pdf In PDF document text
- http://allaboutdowney.com/userimages/44330829203.pdfIn PDF document text
- https://vydavatelstvoklett.sk/userfiles/file/20239910517.pdfIn PDF document text
- https://aadhaarretail.com/administrator/imagetemp/file/56954421003.pdfIn PDF document text
- https://autotronics.vn/userfiles/file/37715845515.pdfIn PDF document text
- https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/i9fj4neogbf2e035t0e99snidc/jusudu.pdfIn PDF document text
- https://bechtoldpaving.com/wp-content/plugins/super-forms/uploads/php/files/568531a20f8ff88e66fd9f10917af424/sonikoj.pdfIn PDF document text
- http://www.moyekolodin.com/files/98188956416.pdfIn PDF document text
- https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/e5f21ebaeeb74f638b501d2ca5818340/wijajunizi.pdfIn PDF document text
- https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/0dce60cc9d6cfa2b9480d39d5d88e932/53201213764.pdfIn PDF document text
- http://wellfoto.cz/pictures/files/53944595366.pdfIn PDF document text
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa5cdd1fe3f---15213822127.pdfIn PDF document text
- https://blsautomation.com/ckfinder/userfiles/files/88687372604.pdfIn PDF document text
- https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/f2512714030f640d320f6199e17624bc/970357841.pdfIn PDF document text
- http://matchonusa.com/uploads/files/xirugaviroxame.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=nda+gs+questionPDF 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://scripts.sil.org/OFLIn 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_off0000dad1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAD1 | 4960 bytes |
SHA-256: 5756a04cffa6be0409f2fc8dfd81f471018585c8d0cd4fa254bd385c0bd2870d |
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font_01_sfnt_off0000ebbf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBBF | 10640 bytes |
SHA-256: 3d87c12f19b22bcffc7f2c2d38597af10b1516e1248a514adeb567a4f83ac103 |
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font_02_sfnt_off0001101c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1101C | 16068 bytes |
SHA-256: 6177aa58399c601ee6e176ddde659ce196d881d2f03274e7f79d577c30538921 |
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