MALICIOUS
182
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and a large number of external URIs, many of which point to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The embedded JavaScript is likely used to execute malicious code or redirect the user to a malicious site.
Machine Learning
- Nyx PDF Classifier malicious score 0.5442
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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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External URI info PDF_URIPDF contains an external URL action
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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://rjpexport.com/files/1540283348.pdf In PDF document text
- http://purepoem.com/resource/docContentImg/file/2021-09-04/a249f71002d14ebbeb5ebeb27f8d891d.pdfIn PDF document text
- http://oticonshop.com/ckfinder/userfiles/files/zekom.pdfIn PDF document text
- https://powerliteaac.com/userfiles/file/filapozizozo.pdfIn PDF document text
- https://beysukonaklari.com/ckfinder/userfiles/files/75156324353.pdfIn PDF document text
- http://www.euro-fly.eu/userfiles/files/rinebalonijilakorelofu.pdfIn PDF document text
- http://ks4073.com/file_media/file_image/file/10878203916.pdfIn PDF document text
- http://bedrucken24.de/userfiles/file/wipebaloselof.pdfIn PDF document text
- http://synergytaekwondo.com/click2buy_newp/userfiles/file/19913292883.pdfIn PDF document text
- https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/27c83c32e1efd58b5aaa7bcf15e9c25d/61040003094.pdfIn PDF document text
- https://rux-thai.com/ckfinder/userfiles/files/68231504237.pdfIn PDF document text
- https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16130077626bd5---10767009741.pdfIn PDF document text
- https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/e586f46dac5c1b4c842623a95a72a4be/narajo.pdfIn PDF document text
- https://weddingitaly.jp/images/file/61923823093.pdfIn PDF document text
- http://namkhoabacninh.com/images/files/dobote.pdfIn PDF document text
- http://ferrocom-spb.ru/userfiles/files/8621478728.pdfIn PDF document text
- https://i-chat.tw/js/ckfinder/userfiles/files/kibosu.pdfIn PDF document text
- http://pc580.cn/upload_fck/file/2021-9-1/20210901191729713053.pdfIn PDF document text
- http://assushop.com/userfiles/assushop.com/file/4607646645.pdfIn PDF document text
- http://orthodoxvaidikasanghom.org/userfiles/file/71672182972.pdfIn PDF document text
- https://ngonluathan.com/images/ckeditor/files/2169279114.pdfIn PDF document text
- http://clingac.com/d/files/50102067904.pdfIn PDF document text
- http://templeton.sk/userfiles/file/mijepe.pdfIn PDF document text
- http://ezclasssites.com/var/wwww/dev-ezclasssites-com/data/files/kasuvogonosadutosobodegop.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=mr+wrong+episode+6+english+subtitlesPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000bbf3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBBF3 | 17532 bytes |
SHA-256: c35b34471555e1e9f836b402b42f765dc53eef09d6fd34bb549f4fa4c06ef628 |
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font_01_sfnt_off0000e991.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE991 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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