MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, with numerous URLs pointing to compromised WordPress sites, suggesting a phishing or malware distribution scheme. The PDF structure and embedded URLs are consistent with a spearphishing attachment used to lure victims to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 6
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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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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://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160961cef8a1bc---19638893028.pdf In PDF document text
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160799c6f712ab---zuseb.pdfIn PDF document text
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6d3d11c04---nazupo.pdfIn PDF document text
- https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/7a1151044231e5faa954b7c5a2d0ef45/mozibofajaziz.pdfIn PDF document text
- http://chinahongji.com/d/files/6585835195.pdfIn PDF document text
- http://yaqeen-eg.com/userfiles/file/xisumut.pdfIn PDF document text
- http://446888.top/userfiles/file/nitasapi.pdfIn PDF document text
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089a96908f7f---vumekalafefok.pdfIn PDF document text
- http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/cf51a7aeb6e86c0f2e5824e32e5b4976/sisonez.pdfIn PDF document text
- http://jjmcp.jp/userfiles/Image/file/78696014717.pdfIn PDF document text
- http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/a71049a0429e14f35a2777fff5833ed0/doluxovikomopites.pdfIn PDF document text
- http://eau-msu.ru/ckfinder/userfiles/files/30838152728.pdfIn PDF document text
- http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16090a08ac72bc---71992293668.pdfIn PDF document text
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160c3a90b94943---levajenigital.pdfIn PDF document text
- https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075f79fa213a---popew.pdfIn PDF document text
- http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b10d9e1bf9e---wikiwizutatuj.pdfIn PDF document text
- http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608238c6047a1---ridir.pdfIn PDF document text
- https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/rspq0aodq57fail7it6h1qiun4/79994334835.pdfIn PDF document text
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097813d0d2c2---remikivezo.pdfIn PDF document text
- http://nemdanangpho.com/uploads/2021-05-30/images/files/butofozolonowino.pdfIn PDF document text
- http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfba3c5e823---nakikibijakikuf.pdfIn PDF document text
- http://fouladsazanco.com/Upload/file/26130298594.pdfIn PDF document text
- http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086afc04ebe3---jovagafejiz.pdfIn PDF document text
- http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c108c942353---mipafovutovomefikojax.pdfIn PDF document text
- http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/b924sm2tlc0h6lc4h10gl7um8h/paxarasozape.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=number+based+ciphersPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f2f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2F2 | 10628 bytes |
SHA-256: d5e0d827742bb2fe61a7ab7f0a69bf40350266300aa795767ce2927a943b8172 |
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font_01_sfnt_off00010afa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10AFA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001230c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1230C | 18072 bytes |
SHA-256: 50a098f440f33fee258de37b504e90b4edfca67da2ee435980b8cc0ad2254467 |
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