MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document exhibits characteristics of a callback phishing lure, prompting the user to contact a phone number under the guise of a billing or security issue. Numerous URLs were extracted, many pointing to compromised CMS upload directories, suggesting a distribution network for malicious PDFs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://invest.pl/userfiles/file/7991819989.pdf
- https://poldercuptrofee.nl/site/admin/ckfinder/userfilesfiles/nixekegigezexu.pdf
- http://allseasonsart.com/uploads/fck_uploads/file/lesade.pdf
- https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/b970815fa8a1a8b9a79d8b100235e1f7/bogula.pdf
- https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/08a03f59ef5b932aeca10d5076ea6aa2/89706027009.pdf
- http://palazzodiaz.com/userfiles/files/pebibumoxoka.pdf
- http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/5n0aldn7e541it6602c4lpd8f4/zasijunivufuxevinur.pdf
- https://koratspring.com/upload/file/malivikebaku.pdf
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb0a82a232---gukukufulupokav.pdf
- http://nordicaluminium.ru/userfiles/file/20559378037.pdf
- https://fiscalonline.ro/app/webroot/files/userfiles/files/50320759664.pdf
- http://meyras-tourisme.com/ressource/site-image/files/moloboxezosifabukuvi.pdf
- http://co-mit.com/uploads/files/wizorofira.pdf
- https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/mo23bv3hpui74i0365fof22jas/68747444013.pdf
- http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160c1f6578f65e---pegubokuxejovujede.pdf
- http://www.autoservis-hubatka.cz/admin/upload/ww/file/50864471094.pdf
- http://candientu24h.vn/webroot/img/files/ruruginisovekupigaw.pdf
- https://accounting789.com/ThImg/file/665982064.pdf
- http://richmore.kr/uploadfile/fckeditor/file/nilibeviwubofesifedid.pdf
- http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/4db36e6c7624433364b589385e800567/nagefuzagemapok.pdf
- https://chandrakantmusicacademy.org/ckfinder/userfiles/files/43660526314.pdf
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/8712bcdf06803dbb685cfc7b91fbae5d/92350852900.pdf
- https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/gk7nmqbmfk36mb7de788li7s6d/witonovafizogi.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=farmville+2+country+escape+hacked+apk+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_off0000f7aa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7AA | 16792 bytes |
font_01_sfnt_off00010fbc.bin40f5aef29ecc0b71051a0e59a70a9cf355721cb0928e9dee5d2bcb4eb6b70fb6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FBC | 17612 bytes |
font_02_sfnt_off00013dd5.bine6276dbbeba4b81bb8690ea8b1375875387047b43f123c70df64760a0896dd78 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13DD5 | 11332 bytes |
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