MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an external URI pointing to 'nipisod.ru', which is likely part of the attack chain. The document body, though heavily obfuscated, suggests a lure related to a 'half life problems worksheet'.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 4
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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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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://nipisod.ru/123?utm_term=half+life+problems+worksheet
- https://cdn-cms.f-static.net/uploads/4412891/normal_60129c8c4c6bd.pdf
- http://vonokumi.iblogger.org/singer_simple_sewing_machine_3116_repair.pdf
- https://cdn-cms.f-static.net/uploads/4527345/normal_605cad5a9a8ac.pdf
- https://cdn.sqhk.co/bibolaned/YmzjbRs/instachat_login_with_facebook.pdf
- https://static.s123-cdn-static.com/uploads/4489586/normal_6004af33c80f7.pdf
- https://cdn.sqhk.co/pojimisuso/ciciwjg/2770854809.pdf
- https://cdn-cms.f-static.net/uploads/4370762/normal_603538dab38e8.pdf
- https://cdn.sqhk.co/mogizufofuj/jJIjNvM/vepiguwuzejudagalija.pdf
- https://static.s123-cdn-static.com/uploads/4414500/normal_5fced36bd0633.pdf
- https://cdn-cms.f-static.net/uploads/4368238/normal_602027d7b2b12.pdf
- https://cdn.sqhk.co/famuxina/jnVihji/juwawutuje.pdf
- https://cdn.sqhk.co/kuwusemob/CtgeAkE/xujugu.pdf
- https://cdn.sqhk.co/pananumujo/cgd9kgj/vemibojofabepebojuxiguwun.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://jusikupejul.epizy.com/37867883975.pdf
- https://40ba1f7a-6e91-49bb-bbb8-dfbb40a2bc60.filesusr.com/ugd/22bf55_975a978d60174dd9b26b09038b46b1a0.pdf?index=true
- https://f7f2eb1f-4ce6-40bf-b337-6bcc2c9c1a95.filesusr.com/ugd/dc6899_db61dc6ae2c74e9ab2dd466f378ba9ca.pdf?index=true
- https://63c5840e-267c-49ed-94d3-fc9f9d8b9c0b.filesusr.com/ugd/8c5bc8_5424e1762a4843629fcebcd6fb0d3e35.pdf?index=true
- https://6a8c3f3f-5248-4e80-80e0-4bf2c04f72bc.filesusr.com/ugd/8b2c09_0825383091974b618959a66b0365c06e.pdf?index=true
- https://19e6fc83-c281-4d06-93fd-e8b16a02b90a.filesusr.com/ugd/ce5d00_10c0aac4f963430b83f889a8107dd52f.pdf?index=true
- http://rewakagofeloze.rf.gd/60658447959.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_off0000e5b6.bina6d977549a4baf6fa64ec56ef7226a433c77a71594048cbb194c553bb04a7ad1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5B6 | 5396 bytes |
font_01_sfnt_off0000f7f1.binfbe0ef0cf6075e972037e1bf53ad3880b267bcf40270678715efac97e3a2baba |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7F1 | 10468 bytes |
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