MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous external links, many pointing to domains associated with compromised CMS uploads or disposable hosting, indicating a malicious intent to redirect users. The ClamAV detection and ML classifier strongly suggest this PDF is malicious, likely serving as a lure for phishing or to distribute further malware. The presence of multiple external URLs, some algorithmically generated, supports the attack pattern of a malicious link farm.
Machine Learning
- Nyx PDF Classifier malicious score 0.9987
Heuristics 7
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://philabc.ru/uplcv?utm_term=movimiento+circular+uniforme+ejemplos+resueltos+pdf
- https://honghow.com/ckfinder/userfiles/files/zusanazarun.pdf
- http://gildiamasterov.ru/userfiles/file/temopujidijogepemor.pdf
- http://ambulatorioveterinariobubiniregini.eu/userfiles/files/deserasusofo.pdf
- https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebcf61a707---vesutimos.pdf
- http://bagliodeimille.it/userfiles/files/pakopokoligeneriwet.pdf
- https://globalybm.com/ckfinder/userfiles/files/1625570544.pdf
- http://karate-talence.com/newsite/userfiles/files/vowulenivo.pdf
- http://kiszelyugyvediiroda.hu/docs/file/duvawa.pdf
- http://blankheich.de/images/uploads/file/gosajudi.pdf
- http://lelit.nl/app/webroot/files/userfiles/files/59447184317.pdf
- http://robbes.nl/media/files/gapaxotopepokodapo.pdf
- http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff1ea4ac77---85320723949.pdf
- http://chizclean.ru/files/fck/file/verasifawiguduraforiz.pdf
- http://centroolosprato.it/userfiles/files/56958468388.pdf
- http://agataklimowska.pl/userfiles/file/43335116428.pdf
- http://qazaqbanki.kz/data/content/files/zujateruxugupadoron.pdf
- http://wongkungfu.ca/clients/f/f5/f5c316b966f29b3192b3e9e3c5714b3c/File/lovavuwukunasuzupo.pdf
- http://soyaksiesta3.com/userfiles/file/51538924887.pdf
- http://nordicaluminium.ru/userfiles/file/11879844426.pdf
- https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/t03h5llqhe5op4jgnkq65dp99d/kanosukawadoxogijewewori.pdf
- https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160749584ed0f8---44839105772.pdf
- https://fultoys.com/userfiles/damijozipolefebi.pdf
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e9990c1ca3---77263822054.pdf
- 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_off0000caaa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCAAA | 16792 bytes |
font_01_sfnt_off0000e2c1.bin0a2d0efa7557bc89d70996e9ad914cf1cf7a13293bcd9f0cf5ad32af1c563b61 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2C1 | 11072 bytes |
font_02_sfnt_off0000fc85.bin73b008b6b1c772f2314cca59f12439615a8d465c7f1f1474535d853657db7a77 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC85 | 16668 bytes |
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