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 0.9995
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://cructi.ru/uplcv?utm_term=9th+samacheer+maths+guide PDF link annotation
- https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/cd40f27c49264d6cc39d9b6a4bc07645/vogunaru.pdfIn PDF document text
- http://zulaikhatextile.com/userfiles/files/panevoledut.pdfIn PDF document text
- http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16075a9de9fc19---penivuzatib.pdfIn PDF document text
- http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/vhetg0kkdtm6ltqvhmcg3c5knn/vofisakapotuk.pdfIn PDF document text
- http://reguitti-engineering.it/userfiles/files/basofewuwexujobogivim.pdfIn PDF document text
- http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16075fe9b1eb77---47262244105.pdfIn PDF document text
- http://be1971.com/clients/a/a1/a19be2fc4cf8b198b52f296748481ce5/File/87140749911.pdfIn PDF document text
- http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608620c3cddd2---gudesazekimubafedopof.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a109b234365---netisadusokobevidomitemi.pdfIn PDF document text
- http://topas.lt/userfiles/file/wabukujadurubunuwof.pdfIn PDF document text
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/b18d3736227a092b745bef6d6b9a6527/90466770859.pdfIn PDF document text
- http://kemenyseprosiklos.hu/upload/file/19756871507.pdfIn PDF document text
- https://elitstroycraft.ru/source/file/danupupukomub.pdfIn PDF document text
- https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/48760b7663e270d95df0687faab7a7c4/wagedefoz.pdfIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_003_off000128b0.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x128B0 | 19468 bytes |
SHA-256: 6c13d1d8af6c6d583a4d2bd4bda7cf5d318443fd15f0c00a33f68d387e247353 |
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font_00_sfnt_off00011698.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11698 | 5384 bytes |
SHA-256: de42922032ed09b4efff3476445216414b84718b3d3968dd8598107c89652abd |
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font_02_sfnt_off00015254.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15254 | 10892 bytes |
SHA-256: 445b362236f2c432ea3faebb485e16f206ced744d8f069bc2e56ebdefc21a0bd |
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font_03_sfnt_off000176e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x176E6 | 2832 bytes |
SHA-256: ab0b30550c16f0218ea180a56450acc25083be48fb805cb0f6f475dfa13b8319 |
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