MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified 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 compromised CMS upload directories, suggesting an attempt to distribute further malicious content or phish users. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics reinforces this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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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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://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079d4b5732c8---zebajene.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607beb5d5e62c---mutanopixozanutibejaf.pdf
- https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/2f0f4be3d8007359d5761e287c63bbe7/93567532630.pdf
- https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/a4c91347b591a15860dfe97f74910eed/biwunelinejosukonipize.pdf
- http://taikenplan.jp/ckfinder/userfiles/files/gilumaxu.pdf
- http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16105ad196d81b---54243410756.pdf
- http://drironcat.com/images/file/69224121089.pdf
- http://tavaszitura.eu/userfiles/files/wixifogaxi.pdf
- http://korea-labels.com/ckfinder/userfiles/files/10208723417.pdf
- https://areicon.com/images/file/zijemitovuz.pdf
- http://xn--vb0b83rba554gca.kr/page_data/file/20210722185318.pdf
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5c4d285d4---rofarejidopori.pdf
- https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c590afb8f06---linuzemanezarutobanop.pdf
- http://nkmate.com/FileData/ckfinder/files/20210726_141C2D5DBFDB6F6C.pdf
- https://securityguardsupply.org/php/uploads/file/97451062672.pdf
- http://stlnsk.ru/uploads/file/babunazaponevulosuzedo.pdf
- https://certifiedcollisionrepair.com/home/cert/public_html/ckfinder/userfiles/files/71836984787.pdf
- https://prokoncept.hu/admin/blogfck/image/file/pibumi.pdf
- http://safaraval.com/basefile/safaravalcom/files/35104803529.pdf
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b5610d9eb90---34875856862.pdf
- https://munis-roquesalbes.cat/demo/vilalba/imatges/file/xosirilabawiporu.pdf
- http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf9ff0ba1c2---71885147312.pdf
- http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/4ki3qeid3gi4ed4edb8ej5jmr4/78532458993.pdf
- http://loca-granderoue-montaletang.com/ckfinder/userfiles/files/68965665425.pdf
- http://asdgolfclubtoscana.com/writable/public/userfiles/file/16396592802.pdf
- https://cometsecurity.in/admin/userfiles/file/57865379610.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=western+union+apk+latest+version+free+download
- 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_off0000fd05.bin76f8f04fb1694b77a370c171da5e97c86f512d12886b81687b25f4521212691a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD05 | 10828 bytes |
font_01_sfnt_off0001163b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1163B | 16792 bytes |
font_02_sfnt_off00012e4d.bin448cdf12a9c15159ab8896f463cb3dd94bfdbbb41ccfbfcbb575048aaae15da9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E4D | 20300 bytes |
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