MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to external sites, some of which are hosted on compromised WordPress installations. The presence of embedded URLs and the nature of the links suggest a phishing or malware distribution scheme, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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=export+to+pdf+button
- https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16083a514056f0---29764479452.pdf
- http://snsi.jp/image/news_file/ronesimo.pdf
- https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a3052341da2---dewupawedefuxed.pdf
- http://centreforeffectivecoaching.com/media/file/jolobozumij.pdf
- https://fidelishospice.com/ckfinder/userfiles/files/bofudo.pdf
- https://acp-luxusingatlanok.hu/ckfinder/userfiles/files/dozisavusaxemogositexug.pdf
- https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb623a851c---povipazimiwofabi.pdf
- https://laatjehuisweerstralen.nl/upload/file/kerebovopomonokizam.pdf
- http://brookhavenclassof1967.com/clients/0/0c/0ca802fc87877f8c548ddf85495caeb2/File/14224243185.pdf
- https://avphunter.ro/ckfinder/userfiles/files/90492031458.pdf
- https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160952cd21b630---dewuturuwamowevemi.pdf
- http://1qjd.com/upload/files/2021-08-20-03-13-33-PEeGJ5N4.pdf
- http://problemconsulting.com/img/download/files/11802306792.pdf
- http://hamkr.com/userData/board/file/pevipimonev.pdf
- http://superfishinglewood.com/uploads/files/86666298177.pdf
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609a27d2a82b0---zezijidapugutewifejad.pdf
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c54d341d66a---93003016355.pdf
- https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/8e269f5fe624d0a37342d32da51b9fa7/68481903982.pdf
- https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b4038f16d2---45023619574.pdf
- http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/16095690208536---dosabe.pdf
- https://sharenkon.com/files/dugafajawasuji.pdf
- https://unique.global/wp-content/plugins/super-forms/uploads/php/files/866a60bdc9c4656f6cf85d3750b2b845/22140096521.pdf
- http://nfrostov.ru/upload/files/relajukisujitamumigo.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c4ba.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC4BA | 16792 bytes |
font_01_sfnt_off0000dccc.bin84ff1ee20d0327462e0f4a8aca8f17b641706ee8cf263969fe7c3b8b82362b19 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCCC | 16628 bytes |
font_02_sfnt_off00010801.bin25edb2359a7afdac3d070886b1cf41f1e533834b2a1b8d0455e488dd3d2f5b61 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10801 | 10216 bytes |
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