MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a PDF link farm, with multiple URLs pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or SEO manipulation scheme. The presence of numerous embedded URLs, some with UTM parameters, further supports the attack pattern of directing users to potentially harmful external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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 https://adamant54.ru/userfiles/files/21513163369.pdf
- http://tvoirostov.ru/ckfinder/userfiles/files/jerepusoxofesorepaterodax.pdf
- https://femagnet.com/upload/edu/article/file/wavepomaxopedakudilan.pdf
- http://laptopcuhaiphong.vn/upload/files/75085162807.pdf
- https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1613ca01b870c3---31947658217.pdf
- https://www.barrau-philippe-sedeco.fr/ckfinder/userfiles/files/kusanovobi.pdf
- http://www.cottagegrad.ru/files/file/67376088542.pdf
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/kpa2p6da54mrlgkeejtnlilth4/tonapowinazijivo.pdf
- http://stl-hk.net/userfiles/8203814849.pdf
- http://ptichile.cl/userfiles/file/mudug.pdf
- https://healthmatters.me/userfiles/file/vamub.pdf
- http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/fokev.pdf
- http://zaragozalawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gipepopoxewewiralagoj.pdf
- https://marikakozmetika.hu/editor_up/vimojilulediz.pdf
- http://mvsexpo.ru/admin/ckfinder/userfiles/files/nikaxefoxusex.pdf
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1612eac0460cc0---98173581939.pdf
- https://artlabjo.com/userfiles/file/65790285116.pdf
- http://optometrystaprzemysl.pl/userfiles/file/69391971412.pdf
- http://ccsup.co.th/uploads/ckfinder/files/niziwesagaxozuxabidewebe.pdf
- https://alkathirilaw.com/userfiles/files/11701399110.pdf
- http://iberia-ex.com/images/blog/file/93816214599.pdf
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/tbi9ao9912invuiukjeoclsgot/54611916695.pdf
- http://chanakyaaerospacedefence.com/userfiles/file/kanuboba.pdf
- http://npcbalkan.net/ckeditor/ckfinder/userfiles/files/tubogezapos.pdf
- http://radtel-sport.pl/userfiles/file/pagomenatizebodotibegu.pdf
- http://studiodispirito.it/userfiles/file/defagobufinazatuma.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=avakin+life+avacoins+mod
- 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_off0000c6df.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC6DF | 16792 bytes |
font_01_sfnt_off0000def1.binc032362ce8b73f206e1fd10aac01e50df60ddbf9d8f7a1b62f2929d280d10aab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEF1 | 20860 bytes |
font_02_sfnt_off00011482.bin14e0039b051743fa74bb6820f148143e2a47dc1c168ac455e814cdb3a8c7f393 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11482 | 10580 bytes |
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