MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ClamAV and an ML classifier, and it contains a heuristic indicating a browser extension/update installation lure. This suggests the document is designed to trick users into installing malicious software. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution scheme, likely involving a second-stage download.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://herfon-machinery.com/images/ckfinder/files/20210908183156.pdf
- http://kovacsoltvaskerites.hu/images/file/29032446731.pdf
- https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/842846778a0eecfc3fc265d1d3b5fd74/81757882583.pdf
- http://viajaconsciente.com/imagenes/userfiles/file/wewelezi.pdf
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/c0820499d923c3a40d687c10c043d060/mofuvasimaxoga.pdf
- http://thanuyentea.com/ckfinder/userfiles/files/nubokaroxukixegabaxele.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613a9e9cdc33c---muripivenevow.pdf
- http://hongdacable.com/d/files/97357749581.pdf
- http://oio.cn/uploadfiles/files/36283601633.pdf
- http://irina-beha.com/ckfinder/userfiles/files/65969023413.pdf
- http://qqwandai.com/uploadfile/file/nodekegunuvobukurotinanif.pdf
- http://suachuadienlanhhoaphat.com/hinhanh_fckeditor/file/bozitufiguwezunubezabe.pdf
- http://assotechne.eu/userfiles/files/fagil.pdf
- http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147b8fa73163---bitosuteviju.pdf
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/aa86bcf4ab5eee91a1325b8ca9e75ce2/68043196760.pdf
- http://drtamerturan.com/file/jatojun.pdf
- http://www.urbanwaterways.info/files/47396586833.pdf
- https://digireg.dk/upload/96699655687.pdf
- http://elvirajogsi.hu/ckfinder/userfiles/files/jewakanoduzekefodijafoz.pdf
- http://phuvuongcorp.com/luutru/files/begezomi.pdf
- https://rabudiagnostic.com/userfiles/files/55173170413.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=meaning+of+conciousness
- 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_off0000b13a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB13A | 16792 bytes |
font_01_sfnt_off0000c951.bin0f1f3c687dead89ae05cba81b6e06acef3d0c42bb3c1b62bf38534919e605aab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC951 | 10360 bytes |
font_02_sfnt_off0000e0d6.bin43ed127908fa8f1d1e440c975c145c70ef7cc274e3350aac7cc6a74cbba22033 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0D6 | 16604 bytes |
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