MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high probability of malicious intent. The heuristics reveal it functions as a link farm, with numerous external URIs pointing to compromised CMS upload directories. These links likely serve as lures for phishing attacks or to distribute further malware payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
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://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/e9ck6c7e8qpjrk1bif8ve7m497/makamaku.pdf In PDF document text
- http://branpc.in/ckfinder/userfiles/files/39975085393.pdfIn PDF document text
- http://penzionriverside.cz/files/file/duxefowijaluxosofujakos.pdfIn PDF document text
- http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/9b775c69de7754cddadf46e93bc6b260/govepaw.pdfIn PDF document text
- https://bitree.com/ckfinder/userfiles/files/kikizuzoserubokumimola.pdfIn PDF document text
- http://xn--80aamdqpfpr.xn--p1ai/upload_picture/14732589858.pdfIn PDF document text
- https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b30317bb784---95812430161.pdfIn PDF document text
- https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/b9573ccdb04f3274b1be8b11ec0dec04/bomajixodun.pdfIn PDF document text
- https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/43aid18ulo18lsablsk6asuoq4/23164197793.pdfIn PDF document text
- https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/28aed3bc01071489ad865f5c98a73631/tuzibekobowomoziv.pdfIn PDF document text
- http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608568f3ad2c2---35452221328.pdfIn PDF document text
- http://weilandensemble.nl/ckfinder/userfiles/files/52691776723.pdfIn PDF document text
- https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160706d033c44f---70409377634.pdfIn PDF document text
- https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160819f590149d---jonivimofajiwezazolezoz.pdfIn PDF document text
- https://myphi.biz/nbloom/fckuploads/file/lademaveli.pdfIn PDF document text
- https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/13328a02fe926011dae172f5a167ccee/siwujutapapuxukewojepo.pdfIn PDF document text
- http://waterreducer.cn/d/files/94134908243.pdfIn PDF document text
- https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca10d353e5---20576180299.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=take+it+all+give+nothing+backPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c3f3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC3F3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000dc05.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC05 | 16764 bytes |
SHA-256: b2ce12c169f5953b730fecfa19e6669bde3bfd87d8764bd86777e2f1c72f1e8e |
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font_02_sfnt_off000107dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107DC | 10504 bytes |
SHA-256: 683cd1503af6d20be5a1569aa5be5e3bd9c87b0178d2cad3804aab41c1ebb3bc |
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