MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs that point to other PDF files hosted on various domains, some of which appear to be compromised WordPress installations. The presence of these links suggests a phishing or malware distribution scheme, where users are lured to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
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://synerhu.ru/uplcv?utm_term=carl+flesch+scale+system+double+bass
- https://satybharat.com/ci/userfiles/files/50094631033.pdf
- https://dcimx.com/files/kimofani.pdf
- http://buchtel1967.com/clients/26382/File/33294237441.pdf
- http://centrons.com/uploaded/file/79552003960d4dac436441.pdf
- http://ajivikafinance.com/userfiles/file/24930092192.pdf
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/16075814645102---19798237687.pdf
- https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160d61aecd0ab9---26024096138.pdf
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160831bd39dfc8---41462191131.pdf
- https://mariellatriolo.it/public/file/gogiritatovupe.pdf
- https://pmms-online.com/assets/file/nuremokapapotazoxavadag.pdf
- http://bright-inter.com/file_media/file_image/file/33124871286.pdf
- http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/81a532a3cf3615c443ee9938c3e4b03c/zevik.pdf
- https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/d6a9c47de02a6818afce7922d586f97a/rufoxikulewusixajuped.pdf
- https://irastuff.com/admin/ckfinder/uploads/files/xegowovabazajem.pdf
- http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607df79f3f9e9---vinaxegevuze.pdf
- https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096d7c6780e9---xudorutitopegufebupekosuv.pdf
- https://m-isc.com/userfiles/file/japunireligupoxu.pdf
- http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/a16335135744b8574630908b20816552/likefegek.pdf
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b0632f9d3e0---44240490641.pdf
- https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3b009cb1a---94836068522.pdf
- http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3c4a256327---susidek.pdf
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ae29d0257---xonejujibefoturolox.pdf
- https://www.sehersirin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1c5174509---xaziwefubagaselowulules.pdf
- http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/1ac0f6d79a652788e6e835d429ec2e28/59753289405.pdf
- http://thuaphatlailongthanh.com/upload/contentFile/minhchau/file/32442464805.pdf
- http://dent-pro.cz/pic/file/miwowipenezod.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_off0000c5ed.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC5ED | 16792 bytes |
font_01_sfnt_off0000ddff.bin85e48b3528e8fa46b8209e4d4b4122014be116afefdb63b363f31aac6d482704 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDFF | 16540 bytes |
font_02_sfnt_off00010950.bin5ef011b6d5efc15cbf1ed7313bf9f0d704949557f054a987344ec463e8e4c102 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10950 | 10932 bytes |
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