MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm pointing to various domains, some of which are identified as compromised WordPress uploads. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://krisoc.ru/uplcv?utm_term=wrong+turn+2021+full+movie+watch+online+free
- http://clubesquilacoma.com/uploads/files/38163378063.pdf
- http://artin-intranet.com/ckupload/files/ximupa.pdf
- http://fjzy18.com/image/uload/files/38602469543.pdf
- http://96rangjai.com/userfiles/file/4769009041.pdf
- https://cicasoftavukatwebsitesi.demowebsiteleri.com/upload/files/muridokuruwanisolopixod.pdf
- http://landtop.com/filespath/files/20210918051547.pdf
- http://sprostredkovanieuverov.sk/res/file/vuvatofaperukeg.pdf
- http://infunplastic.com/d/files/zulupedarukusalobuk.pdf
- http://cafegreenwichvillage.com/uploads/files/jisiparipomubewerakub.pdf
- https://medtek.vn/storage/file/84469120947.pdf
- http://bischofs-scheune.de/userfiles/file/80431461285.pdf
- https://receptabc.hu/images_banner/files/9022435923.pdf
- http://china-hold.com/UploadFile/file/20210911191027066.pdf
- https://lazeo.nl/userfiles/file/gabijov.pdf
- http://www.advokat.com/app/webroot/img/fck/file/jepavofasetupivekatekem.pdf
- https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140bbd4c6249---40650195406.pdf
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140c700c1392---xelibofajugeliwoxukam.pdf
- http://twtqedu.com/userData/ebizro_board/file/19301711637.pdf
- http://networkinglikepro.com/ckfinder/userfiles/files/11823167141.pdf
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1613674ccb32cd---sapokolabipo.pdf
- http://lighthouse-connection.at/myPix/file/vatumivofamumixafono.pdf
- https://cauthinh.com/luutru/files/kemokodenun.pdf
- https://mamo-tato.ro/userfiles/file/89578991021.pdf
- https://pingthye.com/userfiles/files/57520240530.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_off0000f18f.bin83cc2add9c30a9d2e8ac07364fc68512999a87c96c149184fc21e85c4509884d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF18F | 11156 bytes |
font_01_sfnt_off00010b99.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B99 | 16792 bytes |
font_02_sfnt_off000123ab.bin5079759dd61b4516df59aec44d14b70b83260659fc7655e6eab73a3f3c0b1d62 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123AB | 18732 bytes |
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