MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
This PDF file was detected as malicious by ML classifiers and ClamAV. It contains a fake CAPTCHA prompt, a common social engineering tactic to lure users into clicking malicious links. The document body is heavily obfuscated, but the heuristics indicate it functions as a link farm, pointing to numerous URLs hosted on potentially compromised or disposable domains, likely to distribute further malware or phishing content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9901
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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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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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://cometsecurity.in/admin/userfiles/file/57865379610.pdf
- http://rhondachem.com/d/files/tosukatena.pdf
- http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd0b55111a---lipoxipotujeguzopazekame.pdf
- http://fszhenjia.com/upfolder/e/files/20210601101114.pdf
- http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/e8b17671b0f1b9a1571fd4759860bcfe/75779670354.pdf
- https://thuaphatlaihoanghuy.com/uploads/files/57876668176.pdf
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d055e7e931---1105525246.pdf
- https://heks-tech.com/app/webroot/userfiles/files/sugabemexiluzutijav.pdf
- https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/af6d341a5c830f3420a2c98c3ebd7bc6/nodumanuwigi.pdf
- http://bhk-aindling.de/userfiles/files/11375391398.pdf
- https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/7ffa389ef0b223e63fe5cc6ca7fc22d4/34906783994.pdf
- http://quaker1960.com/clients/3/34/346d0055920ff30d27c63167e405b0e7/File/72360626538.pdf
- https://www.helmmsp.ca/wp-content/plugins/super-forms/uploads/php/files/31de83af46bddd681311089429eae22b/vuvosamidufaruwitosis.pdf
- https://alternativecarrepair.com/userfiles/file/33204268574.pdf
- https://megalightgroup.lv/uploads/files/60694821614.pdf
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e5a555dda52---98779151855.pdf
- http://tcihk.com/userfiles/poxoseni.pdf
- https://bakwanudang.com/contents//files/lodige.pdf
- https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160854254d6a77---roloxat.pdf
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/edcc520555c2671ba4b7ba7ee98922bf/dibamizavojod.pdf
- https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/ar242fdv8tcgp20t5oaaq5gqh7/nabexenubo.pdf
- http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e8ba89d07d7---rubifopovefaro.pdf
- http://p-itos.net/admin/userfile/image/file/devas.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=how+to+get+free+gold+in+war+robots+2020+without+human+verification
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000142b3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x142B3 | 16792 bytes |
font_01_sfnt_off00015aca.bin274113efa57c12547658820420e478300c3f01a278a9d3bca811f6338975830a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15ACA | 11548 bytes |
font_02_sfnt_off000175d0.bin450cd44c3628e4298ec1e66e4cdfde19000d63b30388bb1563502dc1d2663fb4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x175D0 | 4540 bytes |
font_03_sfnt_off000186a1.binfccde92b2f1f040f6458b03001746dfa08956cf40df258657d2726e32c1212aa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x186A1 | 21108 bytes |
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