MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous external links, many pointing to PDFs hosted on potentially compromised CMS platforms. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics indicate a pattern of link farming and exploitation of vulnerable web servers. While no scripts were directly extracted, the overall structure and the nature of the URLs suggest a phishing or SEO spam campaign, likely intended to distribute further malicious content or manipulate search engine rankings. The ClamAV detection further supports its malicious classification.
Machine Learning
- Nyx PDF Classifier malicious score 0.9919
Heuristics 6
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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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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://ascensionchina.com/userfiles/file/bilibagamitasixi.pdf
- http://bright-inter.com/file_media/file_image/file/88718021804.pdf
- https://datajournonepal.org/files/rojuvadanal.pdf
- http://jarosi.hu/files/file/mozojuf.pdf
- https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/79bac0e9fd70157e8846ad24cd3b17e8/80240683312.pdf
- https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a07ed48881d---91786504468.pdf
- http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1610039d32ccb3---vizorekura.pdf
- https://mastirz.com/userfiles/files/vobotikuxowiran.pdf
- https://samowar.me/upload/file/74418473150.pdf
- http://hutbephottaihaiphong24h.com/upload/files/bolanofade.pdf
- https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/2cecf306fe3b5c7216f0f9cf069b8d80/muwubud.pdf
- http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acea20d4335---25589815023.pdf
- http://c2ctrading.org/cms_upload/files/daxorosibefega.pdf
- http://asckhn.com/acskhn/userfiles/file/fulanimakiludet.pdf
- http://beerskiboot.com/img/upload/file/85211844345.pdf
- http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1609b24f32b4f5---70670141344.pdf
- https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/rimmo1a2c0pj4l1bppk9rjiet8/sebugifopuxofegobuja.pdf
- http://jagodkaprzedszkole.pl/userfiles/file/50405681504.pdf
- https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086f8db43601---vetabovugutowegafelujaso.pdf
- https://rubyyadav.com/nbloom/fckuploads/file/79517655309.pdf
- https://ascii.tn/web/cgi/file/78438113199.pdf
- https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/9b178dfe50c87096cf822ad889e5b4aa/vosawuvo.pdf
- https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/9dumqjp2bdanbtsljo20os9c11/72877841006.pdf
- http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/83ef1c0b6abdde15a0fd6e6f6cbe2a78/fuvupo.pdf
- http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160afb0982399a---19282848082.pdf
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/1b8404e3101a41a3ecf036a1a7e70c77/15331871085.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=frogger+2+dreamcast
- 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_off0000ed01.bin84de00bee603dbac4a2646805c2cb1d2f69d333ec4e9c530716f0b6d4eab8d8d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED01 | 19252 bytes |
font_01_sfnt_off00011e8c.bin10c3564f50ecf8af5de6a0efce45882e3838653b0a9d10cadd1a1d6070c39856 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E8C | 10568 bytes |
font_02_sfnt_off00013691.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13691 | 16792 bytes |
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