MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It functions as a link farm, containing numerous URLs pointing to potentially compromised websites or disposable hosting. The presence of many external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicate a likely attempt to lure users to malicious sites, possibly for phishing or to download further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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 https://krisoc.ru/uplcv?utm_term=curso+dise%C3%B1o+grafico+pdf+gratis
- http://signexpowholesale.com/project-new/christianbook/upload_images/file/ropezevi.pdf
- http://shengnabei.com/uploadfile/file///2021061812463136.pdf
- https://mtestbd.com/assets/uploads/files/diluwufuguwebagitiveman.pdf
- https://666666.vn/upload/fck/file/63647906336.pdf
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/kokijotolawovuvusi.pdf
- http://aldobini.it/userfiles/files/51330600198.pdf
- https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/fb58443e9a7e3ca5d30f53dd4159dbc7/kabiperazaxowadovab.pdf
- https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608223b58b55d---fejopiwuwudibitemosaxu.pdf
- http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a455e53b39e---jowabanaleseguxuwako.pdf
- http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/16115198b2c710---netefufamajigafobikumaz.pdf
- https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/fb6fe3c5b001a223bd35e76283c0316a/kutega.pdf
- https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/06b919ff42ec1436ba74e4eddb421371/9564816363.pdf
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16105561e84ae0---jexetafuxome.pdf
- http://sola-brothers.com/userfiles/file/95580800332.pdf
- http://iphysiology.ru/upload/75478131785.pdf
- https://carparts-fixture.com/file/file/75170071418.pdf
- http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160d829762c7ab---jibewebotaza.pdf
- http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/b0crmoi2ppsnaib7u7cbfieug1/66221366488.pdf
- https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/4apnae80ge4dplgpmoqabf9lg0/62441466420.pdf
- https://muachungbaohiem.com/uploads/userfiles/file/guzesoradoluzal.pdf
- http://tks-forever.com/upload/2021/07/23/file/50757367569.pdf
- http://archi-m.ru/userfiles/file/38296895359.pdf
- http://kubak-ubezpieczenia.pl/userfiles/file/suzudusukuw.pdf
- http://temple.mo/userfiles/file/nenixiwaguraraniri.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_off0000df36.binefd14feee2da4e8678a957b4628e468f985105a73b267ce1eb24362838b1ae2f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF36 | 17480 bytes |
font_01_sfnt_off00010ba3.bin2d0ffd9e105a232378069f6081d6d8b4e33bf03eff6e4059cd56be634b6ea12a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BA3 | 10980 bytes |
font_02_sfnt_off00012510.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12510 | 16792 bytes |
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