MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to various PDFs hosted on compromised WordPress sites and disposable domains, likely as a phishing or malware distribution lure. No scripts were extracted, but the presence of numerous external links suggests an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://wastran.ru/uplcv?utm_term=fluid+mosaic+model+proteins
- http://eakqshop.com/ckfinder/images_store/files/xokifupofi.pdf
- https://shellserva.nl/docs/Image/file/maxexulurot.pdf
- https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073a91b8558f---gagomonaxakikimuvapovin.pdf
- http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085383c530ec---junawataxo.pdf
- http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074ceb0618c0---41481669328.pdf
- http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a3543f7d6ab---97800853144.pdf
- http://ok-poland.com/userfiles/file/78345405088.pdf
- https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/3aa5bcbd3c3426899d997628a52705f3/gotutekexike.pdf
- http://bestapp4u.com/admin/uploadedfiles/file/81591167967.pdf
- https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/qi646i22u4jh08p49fk8aahe8t/52168787487.pdf
- https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609cb6db407e5---jarinamenozukopusud.pdf
- https://ceccargiurgiu.ro/userfiles/file/43979173701.pdf
- http://k-souz.com/userfiles/file/kugikakodexesivenitoke.pdf
- http://haustechnik-hagenauer.at/kukosenoronobutun.pdf
- http://xpressup.com/userfiles/file/xejodemu.pdf
- http://banghetretruc.com/media/ftp/file/bupavenageneminiwatif.pdf
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b46dbf98a9b---mamegir.pdf
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5eaa2db0f---31940283615.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160984556ca565---zisukifupudovosemavapa.pdf
- http://ixtvs.de/_upload_bilder/_filemanager/file/36571592858.pdf
- http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160706981df9bd---66573931056.pdf
- http://a2itsolutions.com/chop/multimedia/userfiles/file/folotex.pdf
- https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b9c4f6a91e7---vimubanurinip.pdf
- https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1609caeddc4993---71847253539.pdf
- https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/41a10988361f40c7a95e71bfdeaa6a12/36330239533.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_off0000efb8.binc25d74afb60ec95782dd97ccff2f3a55996f00b1507f4d1f9da27bd95ae338de |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFB8 | 17020 bytes |
font_01_sfnt_off00011c15.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C15 | 16792 bytes |
font_02_sfnt_off0001342c.bin02b514933b685b3e05bb353c9b9103a34b8fa348e5c9fe8f37ad1dfbe33aaf52 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1342C | 10752 bytes |
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