MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple external websites, some hosted on compromised CMS platforms. The presence of 'utm_term' parameters suggests a phishing or malware distribution campaign. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to deliver second-stage payloads or redirect users to phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://cructi.ru/uplcv?utm_term=relax+music+meditation+sleep+apk
- http://robalton.es/Albums/images/file/%5C/6819428692.pdf
- https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/3c83a3afee11a2bd6e23a7120f199943/5473475173.pdf
- http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607b60af82d66---5140621593.pdf
- http://jjinline.org/file_upload/file/rejenomigewinunowuv.pdf
- https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/909cefc1234cd186b6b514a9a104d27b/mirotunikekuwufemul.pdf
- http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/97348e8e1205ca844f8a67638f6341c2/59351308234.pdf
- https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/12926bba5368cc85b98f053364416a28/zukifemefalikapezumeguzir.pdf
- https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/1987a37f3125f045b2027d193283d836/fotatepupi.pdf
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606dec5204060---41041712776.pdf
- https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/904jbrl38rlhe4gj9a770verkp/gulipogarodepodurot.pdf
- https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/e69fe1cc0a21e3ba41e0f8e6bee88a69/xobiduzovak.pdf
- http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160989c1bb5f1a---12045738944.pdf
- http://afghansolar.com/userfiles/file/lofokugakijoterosotuda.pdf
- https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/c972aed1b885e4984876b953e835d010/jatubojabifiwikawalu.pdf
- http://apsara.ru/userfiles/file/fobotubi.pdf
- https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/e670d47cab2d0834eb7c9c240a753f5e/lugivanukazalorifefesapox.pdf
- https://alatheir.com/atheirwsfiles/file/jigewobuzubofe.pdf
- http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/16091f39be46a8---suxixepikuzuzu.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e349.bine6f2b5d2c336faa711d10bc85ebc9761ad0e3c79e1a36ca9b86821aa8edd7907 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE349 | 5260 bytes |
font_01_sfnt_off0000f52d.bin71dfedab1fb49aec741bc91d8ee185bc58d2e98e4ac659edaa165b67cac1d714 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF52D | 11036 bytes |
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