MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of external links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, but the presence of numerous URLs indicates a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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 https://chcial.ru/uplcv?utm_term=free+equipment+maintenance+log+template+excel
- http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad3ec60f85a---32534243342.pdf
- https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/06efd4fc8566a2c5599449fe7a3b7b2c/pezeduvasujimufanifuzo.pdf
- http://wchs67.com/clients/f/fd/fd50fd9748f3592dabdfdad26f378f15/File/papibesozor.pdf
- http://blpest.com/UserFiles/file/27706163567.pdf
- https://motty-etai-sharon.com/files/files/63357543172.pdf
- https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/d0362478606169847f7b610df383be9f/tasonugifemivo.pdf
- http://polymer-optix.de/userfiles/file/rinewupekatizem.pdf
- https://balticstroy.com/uploads/files/89970682059.pdf
- http://amirafouad.com/uploaded_files/file/19944327231.pdf
- http://derma-dts.de/files/file/vanazoxekaw.pdf
- http://phrabat.net/UserFiles/File/55751515579.pdf
- https://organicfertilizerproduction.com/d/files/81080686410.pdf
- http://northstarbaptisttyler.com/clients/a/a4/a4b4c2e389351fb2dee96c3f727c6a57/File/magalidajopelodak.pdf
- http://jadever.vn/Images_upload/files/fedabidatigalirekelufij.pdf
- http://tpdw.pl/userfiles/file/gekaxoxuli.pdf
- http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/160b46bf88ffe9---vedolumulol.pdf
- https://rosenstein.lu/userfiles/files/8219332605.pdf
- https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/dn8nre4qshieiuekrk3euphd2e/zupufi.pdf
- http://apexhealthnutrition.com/newerac2c/userfiles/file/japikifiduzozirenadon.pdf
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607491ab32d5c---pofifemag.pdf
- https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/cb9e56202ac9e3d5a5af2111d9d42c0f/falogesen.pdf
- http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/oktq3tt7jj37nppnebipua57v0/bojesaboku.pdf
- https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/0b29edf88092e8ec354865671df08ad4/36954019668.pdf
- http://thallo-food.hu/uploads/ckfinder/userfiles/files/xiturokuloleniro.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_off0000e9b6.bina3e7db9385421d7cc56b70c429eaf3a307a69e86f3c075b21c3b43ba3528ef4a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9B6 | 10876 bytes |
font_01_sfnt_off00010277.bin89736e64b9284a9ad9eec44ad410fd491f744a8cf9d51d63a1b1f8d78efe2416 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10277 | 16084 bytes |
font_02_sfnt_off00012bb7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BB7 | 16792 bytes |
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