MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of external links, many pointing to potentially compromised websites or disposable hosting, indicative of a link farm. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing or trojan threat. The presence of numerous links suggests an attempt to lure users to malicious sites for phishing or malware download.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://xn--b8qxb801j.tw/upload/files/65224709206.pdf
- http://apart1day.ru/file/goxudulidavufekawu.pdf
- http://nuraski.pl/wsg/userfiles/robegaxiriweza.pdf
- https://ibexquimica.com.br/ckfinder/userfiles/files/66029379047.pdf
- https://www.ewdel.cz/ckfinder/userfiles/files/kumevodekazexejapadexu.pdf
- https://ostrichtours.com/ckfinder/userfiles/files/61350541480.pdf
- https://weilaimachinery.com/userfiles/files/80883484889.pdf
- http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136397951ee4---82759683413.pdf
- https://baohohoanglong.com/userfiles/file/ramumafen.pdf
- https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/d5807320c79273a00e239c6edd561a24/lubukafukaduzibupobogelin.pdf
- http://karate-talence.com/newsite/userfiles/files/11628043274.pdf
- http://franzoesischebulldoggen.eu/userfiles/file/winigologasatirepexoli.pdf
- http://chunmianxian.com/upfolder/e/files/20210920062306.pdf
- http://traslochimontalto.it/userfiles/files/68328632717.pdf
- http://glassick.com/userfiles/file/81516678781.pdf
- http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/bthe1ph4bssksobakgmc2d2olh/lokomagenunozegakuzigajet.pdf
- http://goldnumber.info/userfiles/file/19994131123.pdf
- https://ural-aiti.ru/admin/ckfinder/userfiles/files/96537221824.pdf
- https://pragatitic.org/ckfinder/userfiles/files/75439163885.pdf
- https://onlinendttraining.com/files/46464944559.pdf
- http://gachbinhduong.com/upload/file/96467105030.pdf
- http://cserepakcio.hu/xdata/file/73714093850.pdf
- https://xtrafitcoaching.com/www/images/files/12444164641.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=otaku+anime+senki+apk+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_off0000c198.bineb6761f372479fe31860d3fcba6b0863b68fd46f845d516f609baa8e6fff1680 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC198 | 10960 bytes |
font_01_sfnt_off0000db1e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB1E | 16792 bytes |
font_02_sfnt_off0000f330.bin611355c8902169b2d1e46f5e6d15ad25a075bc3fdb017be1653a1dfec6820c5f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF330 | 17016 bytes |
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