MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains heuristics indicating it is a malformed exploit stream and a link farm on disposable hosting, with a high ML score and ClamAV detection as Pdf.Phishing.Trojan. The embedded URL https://jottigo.ru/strik?utm_term=libro+de+artes+danza+2+secundaria+contestado likely serves as a redirect to a malicious site. The document body, though heavily obfuscated, suggests a lure related to educational material.
Machine Learning
- Nyx PDF Classifier malicious score 0.9987
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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://jottigo.ru/strik?utm_term=libro+de+artes+danza+2+secundaria+contestado PDF link annotation
- https://cdn-cms.f-static.net/uploads/4502906/normal_601cd17c2bd28.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459062/normal_601e33be7afd9.pdfIn PDF document text
- https://woxudozu.weebly.com/uploads/1/3/6/0/136042517/ponugapip-julafe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4467915/normal_602ad8746d530.pdfIn PDF document text
- https://sovanomi.weebly.com/uploads/1/3/5/3/135337195/rorimexa_pexedunadivume.pdfIn PDF document text
- https://gavuwili.weebly.com/uploads/1/3/1/0/131070236/dakizujefaka.pdfIn PDF document text
- https://zazivepug.weebly.com/uploads/1/3/4/3/134359823/wupofasolunitubunoj.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392656/normal_604a302db144f.pdfIn PDF document text
- https://xokewetabido.weebly.com/uploads/1/3/1/8/131857041/2269d4b5728.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4424645/normal_60250f6f68a37.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444657/normal_5fe9ae2ad626a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4496015/normal_6054fcd7bf1b8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4423166/normal_601ec00ef247a.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/welanisowari/how_much_is_a_psychiatric_evaluation.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9550fe4d-33b3-4a25-ae06-87eea42975bf/59802391439.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d7368495-243f-4d49-afd4-11212754c830/77957893081.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/813c7c15-ff9b-4612-85ff-e82c54f0218e/luna_lunera_cascabelera.pdfIn PDF document text
- https://s3.amazonaws.com/novifamigot/blockheads_pc_free.pdfIn PDF document text
- https://s3.amazonaws.com/xakapudakadu/seismic_performance_of_exoskeleton_structures.pdfIn PDF document text
- https://s3.amazonaws.com/dewutexorob/mosanigozuxutiwofif.pdfIn PDF document text
- https://s3.amazonaws.com/tarizirefevifab/c_programming_book_in_tamil.pdfIn PDF document text
- https://s3.amazonaws.com/xarojapi/25380415320.pdfIn PDF document text
- https://s3.amazonaws.com/bezutu/sitafawewitobax.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00020ad1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x20AD1 | 5044 bytes |
SHA-256: f1a8b7b75d1ddbf811283278d43c56581064ade147383a7ea07c035591d2359e |
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font_01_sfnt_off00021c07.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x21C07 | 12192 bytes |
SHA-256: 0486e60a25139e4f434702640d5901f3fd04f39e272292cd0d7b5069f9006d2d |
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font_02_sfnt_off000242ac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x242AC | 4324 bytes |
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f |
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