MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics as a link farm, with many URLs pointing to disposable or compromised hosting. The ML classifier and ClamAV also identified it as malicious, likely phishing or a trojan. The document's structure and embedded URLs suggest it is designed to redirect users to potentially harmful content, rather than delivering a direct payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
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 http://xn--djr00fsyfv0o5qgy9u.com/filespath/files/20210909190428.pdf
- https://poolpoint.be/uploads/file/31340798984.pdf
- https://5a.ro/ckfinder/userfiles/files/52899481868.pdf
- http://www.uc-kushiro.net/images/library/File/nikewirider.pdf
- http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/b3cc1b7c48b4f0c416a68f144301e9f9/90814464786.pdf
- http://www.herbertvanderbrugghen.nl/draft/50362995915.pdf
- http://travelcenterpuntos.com/campannas/file/22228351924.pdf
- http://asremajazi.com/uploads/files/tikig.pdf
- https://nsck-cykelmotion.dk/userfiles/file/vobijusawaneguva.pdf
- http://ozdoby-betonowe21.pl/Upload/file/wikazebex.pdf
- http://www.tempshift.com/app/webroot/files/uploadimagesfile/tapijuxosorozegadis.pdf
- http://sissonne.hu/editor_up/37666670530.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b41c38505e---36839182915.pdf
- http://birons.net/wp-content/plugins/super-forms/uploads/php/files/811f460b59314ab16d358842fbeec2a3/51036053015.pdf
- https://tidurmalam2.com/contents/files/6425699929.pdf
- https://sofanet.ro/ckfinder/userfiles/files/xajegubobavefasila.pdf
- http://winso.tw/userfiles/file/32752346899.pdf
- https://cokhivietuc.com/img-vietuc/files/34548864254.pdf
- https://aokman-drive.com/d/files/54505999134.pdf
- http://www.og2c.com/images/file/domaxoximusi.pdf
- http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16137df4073935---49001810884.pdf
- https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/161363b6bddb85---47282197981.pdf
- http://2015.letnifestiwal.pl/ckfinder/userfiles/files/18308378571.pdf
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed878a0938---gulozusoja.pdf
- https://eventpro-kontraktorpameran.com/uploaded/files/63302294402.pdf
- http://www.groupementpecheduloir.com/ckfinder/userfiles/files/liderisatuk.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=get+website+keywords
- 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_off0000d95f.bin8c65ffa7669027089c31a3be40e3f1fe9895a14a33edbc0be242addd821d50ad |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD95F | 18232 bytes |
font_01_sfnt_off00010846.bin127f672c7b849d0b4ef6b11a1a469437ddbc0c7d4b653f6aa6158ebf1979df15 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10846 | 10400 bytes |
font_02_sfnt_off00012010.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12010 | 16792 bytes |
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