MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many pointing to compromised WordPress upload directories or disposable hosting, indicating a link farm designed to distribute malicious content. The 'SE_CALLBACK_LURE' heuristic suggests a phishing or tech-support scam pretext. ClamAV detection and ML classification strongly indicate malicious intent, likely involving exploitation of PDF vulnerabilities to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://wastran.ru/uplcv?utm_term=apc+ups+es+400+manual
- http://tutek.eu/userfiles/file/840476849.pdf
- http://faradtvandor.hu/picture/userfiles/file/3806533896.pdf
- http://masterkontroll.hu/ckfinder/userfiles/files/90258694133.pdf
- https://bcbc3399.com/upload/files/vuxapobuzomulomizezameni.pdf
- http://luligang.com/ckfinder/userfiles/files/55906410838.pdf
- https://hmanagement.net/userfiles/file/gurolotapedimutog.pdf
- http://www.alex-vasilkov.ru/images/wisdom/file/vatajuledejupapawase.pdf
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e082273341---nimomawilo.pdf
- https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609bee8727309---peminetinibekurata.pdf
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d00b6b61eae---velalizoboso.pdf
- http://learningkey.org/userfiles/nixugim.pdf
- https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/f5hg0ji0gbu5cqldm387h3ajof/58598500669.pdf
- https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/q30upngbr76i9svtef5f17b35o/77764575572.pdf
- http://thamdinhgiadaiquang.com/img/files/26157642696.pdf
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160bc8131a6be1---gadojupoziduzotox.pdf
- https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1982a79d18---34345106311.pdf
- https://lotte-ppta.com/beta/assets/file/70063817810.pdf
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/161124377792b7---86620789924.pdf
- https://hotelharmika.com/assets/userfiles/files/23029839507.pdf
- https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f9c9bb4a89---fiparen.pdf
- http://fixmyhelicopter.com/project-new/christianbook/upload_images/file/85022945603.pdf
- http://learnazia.com/fck/imagesfile/84968798332.pdf
- http://agavietnam.com/img/files/zumixonetaz.pdf
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/06m1in0env0b7mbrplgcb6n720/vafalezoxobavakesedate.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_off0000c952.bindd87a86400920534a6e1bab0a16f6f5cb9baea5ad17883a3fb2fe684971e4e41 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC952 | 10408 bytes |
font_01_sfnt_off0000e0f4.bind48eeb120d8e9cb6a7c6c82970d1d18f738f95992b0a7c210837fbb77e0d6f5f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0F4 | 17936 bytes |
font_02_sfnt_off00010f9c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F9C | 16792 bytes |
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