MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a phishing or malware distribution campaign. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' indicate a pattern of using such sites to host or redirect to malicious content. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://ketchas.ru/uplcv?utm_term=application+to+the+principal+for+bonafide+certificate
- http://zdravi-kromeriz.cz/files/file/xovopuxujikogetodetepu.pdf
- http://blissworldbeauty.com/newerac2c/userfiles/file/zinafevubik.pdf
- http://shannonlakeestates.org/fck_images/file/sezebetijaxiguzobapenosig.pdf
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160b90dc18c49e---gipulexezos.pdf
- https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/48427279e9760268a3daad21ef202388/zadolupitavexukufebujozo.pdf
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/d1no21lvs35hf0216ecb93ocp6/rilujixexatiladife.pdf
- http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/51f06dc1ce1dd77555f14e11b789397f/99252996923.pdf
- https://novzelandiya.ru/ckfinder/userfiles/files/redosifetinakilofa.pdf
- http://csc-0411.com/userfiles/file/20210609061850_sc55ap.pdf
- https://betenagro.com/sites/default/files/file/79883374804.pdf
- http://essiac.cz/UserFiles/file/76233100105.pdf
- https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/21b3aed674cb058b47b4e21d8dc76d0b/gofoneruxonul.pdf
- http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080a871d2fc5---werorurexavizisewaburulad.pdf
- https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/3bae8167667e43a3155f395c746ee2e4/40517701336.pdf
- http://mulroyenvironmental.ie/userfiles/file/deguzaxo.pdf
- http://rotang.net/userfiles/file/30036805411.pdf
- http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/ef8f77ab1d898f662b6936b5c7964cbd/24045937650.pdf
- https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d4ad72dcc8---44976143832.pdf
- https://guineaservicesproviders.com/gsp/files/34218344142.pdf
- https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/8d7752982710f94692b6103e7aac3662/65335213567.pdf
- https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/6cf401ce71570fb7570cc8bae614d105/jumovofirefapabewode.pdf
- https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1608917f931c5d---lifasokubetubigovalakij.pdf
- https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/126033cabef87815d5c95460d74397a6/sobipuki.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_off0000ec7d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC7D | 16792 bytes |
font_01_sfnt_off0001048f.binee85782d8f306cdb0a02843fe6721f4d05703dd266a9be79b2dbc77592d23e11 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1048F | 16760 bytes |
font_02_sfnt_off00012fab.bin85806f91d85e46b82ad60afa0e80c131fc73b31d8d8bd3cb06f1c7479b13ce71 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FAB | 10668 bytes |
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