MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
The sample is a PDF document flagged by ClamAV as a phishing trojan. Heuristics indicate it functions as a link farm, with many URLs pointing to compromised CMS upload directories, suggesting it's used to host malicious content. The 'SE_CALLBACK_LURE' heuristic specifically points to a callback phishing or tech-support scam pattern, where users are prompted to call a phone number.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/ut7rdq9p76tlb20m8b6nqqsj1f/89670524573.pdf
- http://chalappuram.com/userfiles/file/96053573325.pdf
- http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16091353c63335---pibejuxani.pdf
- http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160793c8263313---tumenolor.pdf
- http://ttlh.vn/storage/ckfinder/files/66390256514.pdf
- http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/f3c53a0323f5970c07d5f8f6e4728932/87508345663.pdf
- http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c47c14dbecf---fiminulobetibetedema.pdf
- https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/44b744453c3201bb45e9dcefd73e428d/kudilikusagavimizipape.pdf
- http://bobas24.pl/Upload/file/bivinosogop.pdf
- http://botosani.ro/img/uploads/file/likemugedisud.pdf
- https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/44579013e0c8d4dedf106964c0f1cc48/35640628904.pdf
- http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/o6d548t6mtsct9bfft4jqfmjin/dunewajupepedezigepafokot.pdf
- https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/a3d189fa0195d625a783755d2648adbb/7032154022.pdf
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16080f4bad1acb---makalezilimoludagib.pdf
- http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160ac83f4cbe1a---vuwavapolabesimetebeb.pdf
- https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160adaea64e2e0---rumadimixomifuz.pdf
- http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607c0e35e95b6---7506241637.pdf
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b76ee9022e0---balek.pdf
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/6551ad58f9e30deca5c4754475ae5c6c/mizigeroluve.pdf
- http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c37b539e64b---98487138646.pdf
- http://fongyoskert.hu/userfiles/files/sivotazabigimi.pdf
- https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160935799c2bb5---4157524936.pdf
- https://haps.company/wp-content/plugins/super-forms/uploads/php/files/a0ib355urfh374a2q83pr9orm3/48561518242.pdf
- https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/87f4c835c75873e20db3b633003881d2/kokokavoxoramuf.pdf
- https://sitpchemcieszyn.pl/_sitpchem/file/43837863228.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=need+for+speed+most+wanted+mac+download
- 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_off0000f920.bin5f2f1f071c3493a1f640a760de1b3931d33c6296e1f1b518d9c26dd2f63d89de |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF920 | 17396 bytes |
font_01_sfnt_off000126a0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126A0 | 16792 bytes |
font_02_sfnt_off00013eb7.bin6d203b7bffbb80d45842b653fdf4e3a0a5daf8b13d3455fa1a63e70d8abf99bc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13EB7 | 10752 bytes |
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