MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Numerous heuristics fired, including PDF link farms pointing to compromised CMS uploads and algorithmically generated URLs, suggesting a phishing or malware distribution scheme. The embedded links likely lead to malicious websites designed to steal user credentials or deliver further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 8
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://agisma.ru/files/pages/files/26159281527.pdf
- https://agencement-menuiserie-var.fr/stockages/files/81489549545.pdf
- http://aktien-analyse.de/images/File/2680745176.pdf
- http://ip-malkov.ru/uploads/files/tiwowixuno.pdf
- https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/12e5ef18d0aa46af0d164b43287d78ff/minaduja.pdf
- https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1613db24295146---ziwuvetotiworapele.pdf
- http://sunwisechem.com/Uploadfiles/files/garurijumifukupiguzoda.pdf
- https://hamasataccessories.com/userfiles/files/raxotanomireseperomikuvel.pdf
- http://xn--aknmedcal-wpbe.com/uploads/file/basajuweg.pdf
- http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16137e5870982b---1898491507.pdf
- https://hanakspotrebice.cz/eshop/ckfinder/userfiles/files/kawaxavewozupuwusezaseg.pdf
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/161356ef1dd19f---8792825606.pdf
- https://postelezmasivu-ostrava.cz/ckfinder/userfiles/files/notagowojan.pdf
- http://csc0532.com/userfiles/file/20210920082115_uzu9tv.pdf
- https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137cf710285a---23735267064.pdf
- http://onlinemidias.com/ckfinder/userfiles/files/gamum.pdf
- http://18554080.com/userfiles/file/fukoxowo.pdf
- https://nmg.lv/img/uploads/files/26836321302.pdf
- http://xn-----6kcaheblih5ab0a6afqbzoqe.xn--p1ai/ckfinder/userfiles/files/32298523736.pdf
- https://eventpro-kontraktorpameran.com/uploaded/files/mijonijavega.pdf
- https://agriplan-rs.com/dados/ckfinder/files/25117829008.pdf
- https://ezgoe.com/10005001208290177/ckfinder/userfiles/files/99919567726.pdf
- https://pchome.uzai.ca/upload/files/tapejan.pdf
- https://stthomasorthodoxchurchsouthpampady.com/userfiles/file/54415705715.pdf
- http://elitsatodorova.com/uploadfiles/file/besevisamebot.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=does+android+have+gamepigeon
- 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_off0000e8c8.bin5c01cdd4c5e01afd469458937a22f935da15be30bc5f19c4d5e3e681821e95bb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8C8 | 10764 bytes |
font_01_sfnt_off00010120.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10120 | 16792 bytes |
font_02_sfnt_off00011932.bina9373021febe2f17722923b44e1511284d8c885dfa3d35dcdfcedff1f89f11f6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11932 | 17324 bytes |
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