MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple external websites, some hosted on compromised CMS uploads. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure suggests an attempt to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9959
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://maryalo.com/userData/board/file/tibitixokelewatunufaxiw.pdf In PDF document text
- http://s-pack.kr/userfiles/file/20210915235611.pdfIn PDF document text
- https://leresto-niort.fr/images/userfiles/files/tojuzobese.pdfIn PDF document text
- https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614f384ac1177---legebawasatotizidut.pdfIn PDF document text
- http://minisadik-margaritka.ru/admin/ckfinder/userfiles/files/92271838625.pdfIn PDF document text
- https://gaziemirkentkonseyi.com/upload/files/15434417985.pdfIn PDF document text
- http://permagnet.com/upload_files/file/210918194152382972cu1g8o.pdfIn PDF document text
- http://aarogyamedico.com/userfiles/file/dawazudebulonefuxi.pdfIn PDF document text
- http://polaryachtmanufactory.com/res/wysiwyg/file/legur.pdfIn PDF document text
- http://moto-bike.pl/userfiles/file/58130087446.pdfIn PDF document text
- http://ajtoablakcentrum.com/_user/file/givokaxusovifeladegofuja.pdfIn PDF document text
- http://shopgraeagle.com/ckeditor/uploads/files/kidojegutifokove.pdfIn PDF document text
- http://meijialx.com/ckfinder/userfiles/files/88833364722.pdfIn PDF document text
- http://marchmontnews.com/imgs/file/56755164469.pdfIn PDF document text
- https://asiastudy.in/ckfinder/userfiles/files/xemaderazinop.pdfIn PDF document text
- https://7foro.exceltur.org/exceltur_nuevo/ckfinder/userfiles/files/vufedewener.pdfIn PDF document text
- https://cfi-registration.amyhalter.com/buzzboxgift/img/userfiles/files/jezexunajafetetis.pdfIn PDF document text
- https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/d687f38ad50886b367281327705c0737/82063540267.pdfIn PDF document text
- https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613011bfb44ce---poles.pdfIn PDF document text
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/bd6086c66f752aa528afcac730eb70d9/fuvotezi.pdfIn PDF document text
- https://oilbasaro.com/web/images/ckfinder/files/20210926174629.pdfIn PDF document text
- https://soudurelauziere.ca/upload/editor/file/rogawifokeditifatan.pdfIn PDF document text
- https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/g3m2m9pjhoum5tl160r3m9pk4d/feweg.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=diary+of+an+oxygen+thief+free+downloadPDF 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_off0000affe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAFFE | 15528 bytes |
SHA-256: f4b75b7c5bbc06135fbb371c3a1bdafdd3f2f193adb32b33278ad2458de62607 |
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font_01_sfnt_off0000d76a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD76A | 10768 bytes |
SHA-256: 24857dd10fd302ce71551bc5871a5add239fbf69566aee58d4378bfa12cff54a |
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font_02_sfnt_off0000f001.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF001 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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