MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The document contains a large number of external links, suggesting a link farm or redirection to malicious sites, and the embedded content appears to be malformed or obfuscated, likely to hide malicious JavaScript. The primary malicious activity observed is the presence of numerous external URIs, indicating an attempt to redirect the user to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 5
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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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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://vilenefex.ru/strik?utm_term=thema+mathematik+1+l%25C3%25B6sungen+pdf
- https://static.s123-cdn-static.com/uploads/4424692/normal_60033a7324c94.pdf
- https://cdn-cms.f-static.net/uploads/4376619/normal_6068bc2919eab.pdf
- https://static.s123-cdn-static.com/uploads/4392656/normal_5fcf6ef9b0a5b.pdf
- https://cdn-cms.f-static.net/uploads/4467936/normal_6028eb3429f32.pdf
- https://wobikuneli.weebly.com/uploads/1/3/2/7/132741052/tapogunoforubo-suwafubi-nedokugulajom-fubij.pdf
- https://jatekowi.weebly.com/uploads/1/3/0/7/130776123/minatejegi.pdf
- https://static.s123-cdn-static.com/uploads/4388596/normal_5ff9a991d3ae5.pdf
- https://static.s123-cdn-static.com/uploads/4500889/normal_5fc8971b14274.pdf
- https://cdn-cms.f-static.net/uploads/4460466/normal_603bf5220f8af.pdf
- https://cdn-cms.f-static.net/uploads/4472208/normal_601b43731d2a3.pdf
- https://cdn-cms.f-static.net/uploads/4489244/normal_606c9dcb17f7e.pdf
- https://xelusivixofon.weebly.com/uploads/1/3/5/9/135958974/7996996.pdf
- https://cdn-cms.f-static.net/uploads/4501045/normal_5fe9e1c129e5d.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/39d9a737-7594-4f14-a499-453ec5aa90c9/pabitokokajimom.pdf
- https://uploads.strikinglycdn.com/files/6caff3aa-6be8-48db-b8e1-001f32f9ff26/59776691691.pdf
- https://uploads.strikinglycdn.com/files/3f0eb02b-2f91-457c-9d5f-a885d239e304/mary_poppins_1964_cast_today.pdf
- https://uploads.strikinglycdn.com/files/2c1c3772-e737-4a15-a29a-9520e4ec306c/robin_hood_disney_love_quotes.pdf
- https://uploads.strikinglycdn.com/files/3adc1498-ff5c-453f-b74a-cf5ba41a2c01/soccer_speed_training_plan.pdf
- https://uploads.strikinglycdn.com/files/4b5f37a0-ee81-4818-82a9-99defd6f9767/machine_learning_in_python_and_r_for_dummies.pdf
- https://uploads.strikinglycdn.com/files/5e04740d-fa7d-4908-841b-bc1828597395/68317599109.pdf
- https://uploads.strikinglycdn.com/files/b4ee8910-99cb-41ab-89ba-d3d63a0ca683/5701036340.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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00012506.bin5a7bd83fdba161b49668ed0842e1061c52488f4ca5e30e0d535de6abeda2dc69 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12506 | 5564 bytes |
font_01_sfnt_off00013793.bin703c68b11b7e07f2e868ccce943872c6062f56fdd576825b1db676d1d102f287 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13793 | 12500 bytes |
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