MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file exhibits multiple indicators of malicious activity, including malformed streams and a high ML classifier score. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a phishing or malware distribution scheme. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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 http://lncxjzxxw.com/upload_fck/file/2021-5-16/20210516131700277718.pdf In PDF document text
- https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/1b446a5694942fb038f32c1b33ff1744/8094266994.pdfIn PDF document text
- https://ajwatravel.com/wheelmarine/userfiles/file/12507965980.pdfIn PDF document text
- https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/00d5dc1fc5fbaf059c30912e16b1be08/zobutib.pdfIn PDF document text
- https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/fe579cd571d60289f6010be511ce74ed/savubuvefenilufosav.pdfIn PDF document text
- https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608510f0e577d---tiweti.pdfIn PDF document text
- https://seltec.io/images/uploads/files/6794312074.pdfIn PDF document text
- http://supermarketdv.ru/files/file/53498166540.pdfIn PDF document text
- https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/7e27574756f62b1842bc1c119d322a31/1831991536.pdfIn PDF document text
- https://www.dartmusicfestival.co.uk/wp-content/plugins/super-forms/uploads/php/files/c853aa4c13662548958fdb3d10485f9f/mukerilukumorej.pdfIn PDF document text
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160879ccfbe52c---sexasagudominadunitagib.pdfIn PDF document text
- http://aelma.com/sites/default/userfiles/file/54832280024.pdfIn PDF document text
- http://megat.pl/uploaded/fck_files/file/lelugobazezegafiremegevir.pdfIn PDF document text
- http://titusrelay.com/clients/e/ef/ef304ccc03541e9e6382bef5f13b0a7d/File/52065129967.pdfIn PDF document text
- http://tfforming.ru/d/files/bafov.pdfIn PDF document text
- http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/8665e24aa1576dc06f5fd4ccc669f9ee/24184095781.pdfIn PDF document text
- http://fixafilm.se/userfiles/file/sajizoberifituni.pdfIn PDF document text
- http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202105061536355967.pdfIn PDF document text
- http://orbitsecurity.qa/pro_mvp_tech/uploads/file/987239283.pdfIn PDF document text
- https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/d1414a5e675e50eede8c69411e9258ef/10054324896.pdfIn PDF document text
- http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160947a32cf0e0---zuvoralezawud.pdfIn PDF document text
- http://podiummoda.ru/userfiles/file/39809658195.pdfIn PDF document text
- https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a0e913bde32---5894271329.pdfIn PDF document text
- http://dungcubepgiangtrinh.com/webroot/img/files/69665240885.pdfIn PDF document text
- https://agentcctv.com/userfiles/file/73631589897.pdfIn PDF document text
- https://micsys.in/userfiles/file/runarifagofakifuwazi.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=for+an+onto+function+range+is+equivalent+to+codomainPDF 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://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_off0000f107.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF107 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001091e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1091E | 11108 bytes |
SHA-256: 4fd10e54298d4155c1465a6a904fed9f5bfffbc642bf29fd51d8e33245824528 |
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font_02_sfnt_off00012286.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12286 | 18032 bytes |
SHA-256: 73bd98dc6f2ea4a002c674cf1b2f14a98926714a18d087128e5f421067a9f0ae |
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