MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised or disposable domains, suggesting a link farm or phishing lure. The PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristic indicates a pattern of using compromised content management system uploads for hosting malicious files, and PDF_SEO_DISPOSABLE_LINK_FARM suggests a link farm on disposable hosting. While no scripts were extracted, the overall structure and heuristics point towards a malicious intent to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9929
Heuristics 6
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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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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://isspskola.lv/userfiles/files/39669967739.pdf
- http://debeleven.net/UserFiles/File/26811064485.pdf
- https://sarenpinler.com/calisma2/files/uploads/ruridixareri.pdf
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c2e260adf81---rafefozawoxurideduzax.pdf
- http://shippingengineering.com/files/ckeditorothers/94839967178.pdf
- http://epoxidice.ro/mm/file/97136754909.pdf
- http://hoteldanang.vn/uploads/images/files/titane.pdf
- https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/f46t6llmgruve8okiou4cqrekh/tetawuxajemobop.pdf
- http://abbwingslynnhaven.com/uploads/files/27536584860.pdf
- https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/d5tk4ke8pfcjk602admo1hhutk/puketupevibovorise.pdf
- https://cnn-logistics.com/asset/files/dasim.pdf
- https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/di7lv57ob5sfukl6hsn7dajh19/tifafaxirobosimuvorika.pdf
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160715daa296c2---xigajuxuporur.pdf
- https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/b8ddb09ce5c5b1e2be28162aad393d05/43655982223.pdf
- http://jnafarms.com/clients/864068/File/4693487435.pdf
- https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/2e582122663d4d1c57ce074bfa143eaa/tegovawegolu.pdf
- https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/f6afa7498b8aa50d9a3aaebc6b22f749/bolaponalunesuvepeluma.pdf
- https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/nmto4hsprna5e5bt3jn5pn6h8k/ratajalejiwajasoze.pdf
- http://www.museopizarra.com/ckfinder/userfiles/files/84613603956.pdf
- https://ebooksweb.net/files/file/jideradewo.pdf
- http://stepsforstarlight.com/clients/c/c6/c668404594a1c08d975ab50c7bec58f6/File/15567257870.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=speakout+upper+intermediate+2nd+edition+answer+key
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010f9e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F9E | 16792 bytes |
font_01_sfnt_off000127b0.bin17c3dfc36a5a452a31ffbb4908e42fb94bde74fa3cefd7d392af06eb52f9106d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x127B0 | 17652 bytes |
font_02_sfnt_off0001564a.bin956dc9b871a9848be24a174af720fddc87ef84faf82b11feeb6fe4672682d95d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1564A | 3460 bytes |
font_03_sfnt_off0001640c.bina19a84b3236266c36b3e7d7135b2a38e4263260ac75b4c73aecfd1599e264dfc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1640C | 11092 bytes |
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