MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs that point to external sites, some hosted on compromised CMS platforms. 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 malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://pistant.ru/uplcv?utm_term=word+user+manual PDF link annotation
- http://binarbaidrealestate.com/public_html/userfiles/file/kenowogesanoxob.pdfIn PDF document text
- http://szyoujin.com/UploadFile/file/20210903125543351.pdfIn PDF document text
- http://5percent-design-action.com/upload/users/files/lupikibokel.pdfIn PDF document text
- http://evevoyance.fr/adh/.-/file/94773473771.pdfIn PDF document text
- https://www.hs-hofgastein.salzburg.at/ckfinder/userfiles/files/vufasijuxogosesasaw.pdfIn PDF document text
- https://dukupahit.com/contents/files/tubufawedawoziga.pdfIn PDF document text
- http://ampletrekking.com/userfiles/file/fapitepodojudedukemimoja.pdfIn PDF document text
- http://scbczy.cn/up_files/file/20210918_035211.pdfIn PDF document text
- https://www.jnvhardoi.org/ckfinder/userfiles/files/zajakavokimefefene.pdfIn PDF document text
- http://senvietsystem.com/ckeditor/upload/files/wafari.pdfIn PDF document text
- http://3suntech.com/UploadFile/file/20210911000850786.pdfIn PDF document text
- https://swalaya.in/userfiles/file/vonakimedafamijom.pdfIn PDF document text
- http://redigonda.it/userfiles/files/82079501481.pdfIn PDF document text
- https://chungcungoaigiao.vnpec.xyz/uploads/files/54295300983.pdfIn PDF document text
- http://shijijiaming.net/filespath/files/20210915170925.pdfIn PDF document text
- https://www.abrasco.org.br/ckfinder/userfiles/files/vuvupusisunetomisadomazas.pdfIn PDF document text
- https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/avc9oi8lc5l5v08h1irp8qo2l4/98925899784.pdfIn PDF document text
- http://videlec.be/ressource/file/7795329174.pdfIn PDF document text
- http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/049b5db7ab5080615c57e6bc8820f7de/sepadebin.pdfIn PDF document text
- http://jayeonrak.com/upfile_editor/2021/files/57531610224.pdfIn PDF document text
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/161451def20aba---virenagakilivawalilibeji.pdfIn PDF document text
- https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161404d4ba9994---debirojexem.pdfIn PDF document text
- http://utpcomp.ru/uploads/files/9013648329.pdfIn PDF document text
- 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_off0000e28b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE28B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000faa2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAA2 | 10312 bytes |
SHA-256: 9463a12d6be945a1eb37dbf27ab0ea118839e5c046cad5ab4e52b9e6339b8b5e |
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font_02_sfnt_off000111dd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111DD | 18108 bytes |
SHA-256: 03ab67145a3796b34dea7945a11a5e9eee3377519666314a3c1d8f7d813228fe |
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