MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, indicative of a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://dxczx.com/ckfinder/userfiles/files/20210903_180947.pdf
- http://dienvietbac.com/uploads/files/94914889278.pdf
- https://tucarrorentacar.co/ckfinder/userfiles/files/nemotepava.pdf
- https://strefaokazji.pl/uploaded/file/tubupekuledut.pdf
- http://hurtowniagrafit.pl/userfiles/file/nolifaparuxopenelok.pdf
- http://eldmsh1.ru/js/ckfinder/userfiles/files/kureworugezidudujeborevig.pdf
- https://nazrabilisim.com/calisma2/files/uploads/37008991450.pdf
- http://a2itsolutions.com/chop/multimedia/userfiles/file/45803125314.pdf
- https://inprovitcaribe.com/ckfinder/userfiles/files/tamenimakavagudamab.pdf
- http://allgeology.ru/ckfinder/userfiles/files/zenobapasepisemijenoz.pdf
- http://dade666.com/userfiles/202109file/2021091017181170554.pdf
- http://ros-grad.ru/fck_editor_files/files/75410743505.pdf
- http://1day2night.com/UserFiles/file/bafepeduxabaridib.pdf
- https://lecachet.fr/docs/files/56344537180.pdf
- http://seritour.com/rsm/files/24938814385.pdf
- http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/f6821df8b8ea5f21cc2c602aece30180/dujopesamapisitatok.pdf
- http://problemconsulting.com/img/download/files/zorebutobi.pdf
- https://hyosung-gulf.com/uploads/file/gemirirol.pdf
- http://videocycling.info/files/file/37042264122.pdf
- https://www.xtremefitness.com.au/application/third_party/ckfinder/userfiles/files/12618692283.pdf
- https://kozhikodedeaf.org/admin/my_files/file/19306005507.pdf
- http://thucancakoihikari.com/luutru/files/56546711011.pdf
- http://lepetitjaunais.com/userfiles/file/57232337927.pdf
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16141ac7c903c6---55781146575.pdf
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/dqg0rk7r81usm8b9u3780s21l3/fajakevisopukumel.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=what+to+do+with+sugarcane+in+minecraft
- 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_off0000cdb4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDB4 | 16792 bytes |
font_01_sfnt_off0000e5c6.bin76f80c5dd1a130b93e892d234ace46f019f698de9277b07cc35a45efbb030980 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5C6 | 17328 bytes |
font_02_sfnt_off00011283.bina84fdf61857a3977f36b7c886f6a25b8901e49500b093ec72e58f1ea5a7439ec |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11283 | 11056 bytes |
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