MALICIOUS
112
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is likely used to redirect the user to malicious URLs. Several heuristics indicate the PDF is part of a link farm hosted on compromised WordPress sites and disposable domains, suggesting an attempt to distribute further malware. The ML classifier strongly flagged this PDF as malicious, and the 'Fake invoice / payment lure' heuristic further supports the phishing pretext.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/kepepixeguvuronavopo.pdf
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba4a052ce1---45380587892.pdf
- http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16080980b8648b---83962323879.pdf
- http://1hozain.ru/files/userfiles/files/20143430545.pdf
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/6bu7euuv3449513elpbjl5jqd0/6303751951.pdf
- https://aspirans.com/files/file/mulegopenagi.pdf
- https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/nk3aufm3qsm3a2iskqjlmm9uls/69119704510.pdf
- https://stillwaiting.org/userfiles/file/49757596002.pdf
- https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/2059b347d0f3e863c27c2e3642ad3849/mumipegelakuvaxewilevuw.pdf
- https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c055bfa1d0b---21722007343.pdf
- https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607ae9e9c270d---xabepazuwodazajejixa.pdf
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a40c49f261c---dobusetulisezonogugapow.pdf
- https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/db321eb7921766e5e73d5a87c62b72b9/48221136524.pdf
- https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/7771ae66ec71824bfda73e2ea08cc323/70035264219.pdf
- https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/7ehqsld1ssuld4j47r5ulkrgs6/tugebaguwesiwumu.pdf
- https://ideylia.fr/uploads/file/jilekixaxufinod.pdf
- http://xn--aknmedikal-yub.com/uploads/file/fekiwal.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a7fabb53f.pdf
- https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160afdc1cc66c6---65691817197.pdf
- http://www.patriarca-batiment.com/ressource/site-image/files/xobamewarol.pdf
- http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc2c478075---90899608648.pdf
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16081c184c1d75---53852120909.pdf
- http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/dda460d0d68c980f329cef266fbe74ff/xafejajelupatibiloji.pdf
- http://taketty.xyz/js/ckfinder/userfiles/files/94609581000.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=really+bad+stomach+ache
- 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_off0000f27b.bin8f390d25ada22e22bf37d104c5a6c09cd8726ea3cfbb31f3a54437b803a69353 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF27B | 16744 bytes |
font_01_sfnt_off00011df9.bin690c6fcdc7f7d9c0628c833e53cb601e5b600b859aa2d832a1a65671043ad1b3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DF9 | 10636 bytes |
font_02_sfnt_off00013661.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13661 | 16792 bytes |
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