MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm directing to multiple compromised CMS upload locations, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body is heavily obfuscated and appears to be metadata rather than user-readable content, providing no direct clues to the lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://brmhn.com/userfiles/file/20210702080909_lbc8vb.pdf
- http://angarakshaksecurity.com/userfiles/file/suvomubivifeduwogebekodat.pdf
- https://iva-vietnam.com/userfiles/file/85875498424.pdf
- http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d3c8c396adf---bekotozapetota.pdf
- https://101doctor.com/uploads/ckfiles/files/60bf8aeb9ed71.pdf
- https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/c72bde1348b9858c7abab14d0efc3cbc/21763197635.pdf
- http://anhuicrew.com/upload_fck/file/2021-5-13/20210513213613589342.pdf
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/db101dd520331cf17efe70fa3765c6e8/rawer.pdf
- http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160862a0d8e030---jobawafalida.pdf
- https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/cm69nt3k23bvio07t49bpgg8b2/zesadozomuzupegenibib.pdf
- http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160d192f4ab157---vigadimexifotubil.pdf
- http://seoulsquare.com/userfiles/file/wenujab.pdf
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/a6d67a6324a3fd9413f37f8bb154163e/67993785647.pdf
- http://aprendanow.com/wp-content/plugins/super-forms/uploads/php/files/dbd037631130f7ec533891c66e3785f9/zojorunuxe.pdf
- http://blfimmobiliare.com/userfiles/files/fujujobemuzezanagubetiruj.pdf
- http://aclamerica.com/customers/CMS-IMAGES/file/34111063878.pdf
- http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/c5566488a81b6a85f4f784a50ee7a49b/jeramupegusi.pdf
- https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/d6f71bba838d2574ff371a3b3e863784/72920806802.pdf
- http://videofilm-tv.ru/content/File/wufedovexelevebi.pdf
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/b5e3805c119d2d02165216eb09b7ef3c/juzotabowizovix.pdf
- http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/8b06f3b463dab3d2d3751a4ce1364c1d/xonere.pdf
- https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086e1f408508---vadatijikakugokijatogida.pdf
- http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1609d39558c1ee---wodafovuxinax.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=facts+about+trigonometry
- 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_off0000e4d6.bin920279a73f7a1b53d30893b6875ecf7a21229cfffd638723e1f85a39ae587117 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4D6 | 16940 bytes |
font_01_sfnt_off00011127.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11127 | 16792 bytes |
font_02_sfnt_off0001293e.bin7267b5a1e00630f2ba957247f447145767ee7e35c870178a06ce1fc35a05cc4f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1293E | 10856 bytes |
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