MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains a link farm pointing to various domains, some of which appear to be compromised WordPress sites, suggesting an attempt to distribute a password-protected archive. The presence of embedded URLs and the heuristic for password-protected archive lures strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 7
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://cytokin.ca/upload/editor/file/nevadalibadit.pdf
- https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/cb86124ad15f09f4f0f4a2ebcb089489/68499379608.pdf
- https://www.geya99.com/ckfinder/userfiles/files/69558613079.pdf
- http://geometramaurotozzi.it/userfiles/files/dowajafol.pdf
- https://postele-z-masivu.sk/ckfinder/userfiles/files/78402508687.pdf
- http://prospekt-rostov.ru/ckfinder/userfiles/files/xubazonedijedukunuvetive.pdf
- http://canoeing.by/pics/files/89188161020.pdf
- http://radyoislam.com/resimler/files/38708516527.pdf
- http://nowyhotelik.pl/userfiles/file/ropopove.pdf
- http://www.amedna.com/userfiles/files/binevaw.pdf
- http://traiteurluc.com/userfiles/file/69862742406.pdf
- http://gemcom.org/userfiles/file/3395392048.pdf
- http://schuetzenfest-hemeringen.de/ablage/userfiles/files/25511668328.pdf
- http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/161420b84e62b1---subebunarutuxa.pdf
- https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1613efb965d308---85371850207.pdf
- https://keongracun.org/contents/files/53963314728.pdf
- http://sportingclubalbinia.eu/userfiles/files/pukamagaguxe.pdf
- http://kxzyjy.com/CKEdit/upload/files/34795241017.pdf
- http://massarentearchitettura.com/userfiles/files/vuwuvigedusaparuna.pdf
- https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/qj6mf88iru5vdgo056mntq536u/mopadawobajuwawul.pdf
- http://boldogelet.hu/media/69838175414.pdf
- http://merwepizza.com/upload/file/tadatilixaxipomujeseji.pdf
- http://ji-tien.com/userfiles/file/36541754519.pdf
- http://ideal-site.ru/userfiles/file/gikubiketebowositanere.pdf
- http://hyosangjo.com/userfiles/file/20210903091153.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=staff+email+office+365
- 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_off0000d8cd.bina64906fedb1136078f4d497b93b9e15dc66914aa19f73f0b4bf1579b36cba72b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8CD | 10672 bytes |
font_01_sfnt_off0000f14f.bin7fff24e46cd05e9757819e0245d5a51642da694ee83210dd75763c50b07e94ef |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF14F | 19284 bytes |
font_02_sfnt_off00012390.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12390 | 16792 bytes |
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